Home / 20,414.30-28,172.41-11,463.39

Finding the Fourth Proportional to 20,414.30, 28,172.41 and 11,463.39

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Solution

The fourth proportional to 20,414.30, 28,172.41 and 11,463.39 is: 15,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.30 : 28,172.41 = 11,463.39 : x
  2. Step 2: Convert to fraction form
    20,414.30/28,172.41 = 11,463.39/x
  3. Step 3: Cross multiply
    20,414.30x = 28,172.41 × 11,463.39
  4. Step 4: Simplify right side
    20,414.30x = 322,951,294.41
  5. Step 5: Solve for x
    x = 322,951,294.41/20,414.30
  6. Step 6: Final answer
    x = 15,819.86

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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.