Home / 20,534.28-28,337.29-11,581.76

Finding the Fourth Proportional to 20,534.28, 28,337.29 and 11,581.76

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Solution

The fourth proportional to 20,534.28, 28,337.29 and 11,581.76 is: 15,982.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.28 : 28,337.29 = 11,581.76 : x
  2. Step 2: Convert to fraction form
    20,534.28/28,337.29 = 11,581.76/x
  3. Step 3: Cross multiply
    20,534.28x = 28,337.29 × 11,581.76
  4. Step 4: Simplify right side
    20,534.28x = 328,195,691.83
  5. Step 5: Solve for x
    x = 328,195,691.83/20,534.28
  6. Step 6: Final answer
    x = 15,982.82

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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.