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Finding the Fourth Proportional to 14,732.87, 20,331.14 and 8,108.87

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Solution

The fourth proportional to 14,732.87, 20,331.14 and 8,108.87 is: 11,190.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,732.87 : 20,331.14 = 8,108.87 : x
  2. Step 2: Convert to fraction form
    14,732.87/20,331.14 = 8,108.87/x
  3. Step 3: Cross multiply
    14,732.87x = 20,331.14 × 8,108.87
  4. Step 4: Simplify right side
    14,732.87x = 164,862,489.83
  5. Step 5: Solve for x
    x = 164,862,489.83/14,732.87
  6. Step 6: Final answer
    x = 11,190.12

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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.