• ¼, one quarter
• Fourth, the ordinal number
  Ordinal number
  In set theory, an ordinal number, or just ordinal, is the order type of a well-ordered set. They are usually identified with hereditarily transitive sets. Ordinals are an extension of the natural numbers different from integers and from cardinals...
  
   following third
• Preceded by the, refers to the United States holiday of Independence Day, celebrated on the fourth of July.

Music

• Perfect fourth
  Perfect fourth
  In classical music from Western culture, a fourth is a musical interval encompassing four staff positions , and the perfect fourth is a fourth spanning five semitones. For example, the ascending interval from C to the next F is a perfect fourth, as the note F lies five semitones above C, and there...
  
   in music theory
• Augmented fourth or tritone
  Tritone
  In classical music from Western culture, the tritone |tone]]) is traditionally defined as a musical interval composed of three whole tones. In a chromatic scale, each whole tone can be further divided into two semitones...
  
  
• Subdominant
  Subdominant
  In music, the subdominant is the technical name for the fourth tonal degree of the diatonic scale. It is so called because it is the same distance "below" the tonic as the dominant is above the tonic - in other words, the tonic is the dominant of the subdominant. It is also the note immediately...
  
  , and the chord built on the subdominant
• Fourth (album), an album by Soft Machine

See also

• 4 (disambiguation)
  4 (disambiguation)
  4 is the year 4 CE.4 or four may also refer to:* 4 BC, year* 4 * 04 - Music :* 4 * 4 , 2010 album by The Bamboos* 4 * 4...
  
  
• 1/4 (disambiguation)
• Forth (disambiguation)
  Forth (disambiguation)
  Forth may refer to:* Forth , a stack-oriented computer programming language* Forth , album by British rock band The Verve* River Forth, a major river in Scotland...