Step 1: Start with the fraction 15/28.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

15 ÷ 28 = 0.5357

Step 3: Multiply the result by 100 to get the percentage.

0.5357 × 100 = 53.57%

Final Answer: 15/28 as a percentage is 53.57%.