Compare 21/4 and 21/28
1st number: 5 1/4, 2nd number: 21/28
21/4 is greater than 21/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
21/4 = 21 × 7/4 × 7 = 147/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
21/28 = 21 × 1/28 × 1 = 21/28 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/28 > 21/28 or 21/4 > 21/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4 and 21/28 21/4 and 42/28 21/8 and 21/28 21/4 and 21/56 63/4 and 21/28 21/4 and 63/28 21/12 and 21/28 21/4 and 21/84 21/20 and 21/28 21/28 and 21/28