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Finding the Fourth Proportional to 14,660.28, 20,231.10 and 8,372.28

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Solution

The fourth proportional to 14,660.28, 20,231.10 and 8,372.28 is: 11,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,660.28 : 20,231.10 = 8,372.28 : x
  2. Step 2: Convert to fraction form
    14,660.28/20,231.10 = 8,372.28/x
  3. Step 3: Cross multiply
    14,660.28x = 20,231.10 × 8,372.28
  4. Step 4: Simplify right side
    14,660.28x = 169,380,433.91
  5. Step 5: Solve for x
    x = 169,380,433.91/14,660.28
  6. Step 6: Final answer
    x = 11,553.70

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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.