Home / 20,472.18-28,251.28-11,519.68

Finding the Fourth Proportional to 20,472.18, 28,251.28 and 11,519.68

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Solution

The fourth proportional to 20,472.18, 28,251.28 and 11,519.68 is: 15,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.18 : 28,251.28 = 11,519.68 : x
  2. Step 2: Convert to fraction form
    20,472.18/28,251.28 = 11,519.68/x
  3. Step 3: Cross multiply
    20,472.18x = 28,251.28 × 11,519.68
  4. Step 4: Simplify right side
    20,472.18x = 325,445,705.19
  5. Step 5: Solve for x
    x = 325,445,705.19/20,472.18
  6. Step 6: Final answer
    x = 15,896.97

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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.