Home / 28,304.76-39,060.18-15,729.24

Finding the Fourth Proportional to 28,304.76, 39,060.18 and 15,729.24

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Solution

The fourth proportional to 28,304.76, 39,060.18 and 15,729.24 is: 21,706.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,304.76 : 39,060.18 = 15,729.24 : x
  2. Step 2: Convert to fraction form
    28,304.76/39,060.18 = 15,729.24/x
  3. Step 3: Cross multiply
    28,304.76x = 39,060.18 × 15,729.24
  4. Step 4: Simplify right side
    28,304.76x = 614,386,945.66
  5. Step 5: Solve for x
    x = 614,386,945.66/28,304.76
  6. Step 6: Final answer
    x = 21,706.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.