Compare 21/98 and 4/81
21/98 is greater than 4/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 81 is 7938
Next, find the equivalent fraction of both fractional numbers with denominator 7938 - For the 1st fraction, since 98 × 81 = 7938,
21/98 = 21 × 81/98 × 81 = 1701/7938 - Likewise, for the 2nd fraction, since 81 × 98 = 7938,
4/81 = 4 × 98/81 × 98 = 392/7938 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1701/7938 > 392/7938 or 21/98 > 4/81
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