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Finding the Fourth Proportional to 18,502.10, 27,753.08 and 8,635.90

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Solution

The fourth proportional to 18,502.10, 27,753.08 and 8,635.90 is: 12,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.10 : 27,753.08 = 8,635.90 : x
  2. Step 2: Convert to fraction form
    18,502.10/27,753.08 = 8,635.90/x
  3. Step 3: Cross multiply
    18,502.10x = 27,753.08 × 8,635.90
  4. Step 4: Simplify right side
    18,502.10x = 239,672,823.57
  5. Step 5: Solve for x
    x = 239,672,823.57/18,502.10
  6. Step 6: Final answer
    x = 12,953.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.