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Finding the Fourth Proportional to 12,472.43, 17,204.48 and 9,111.13

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Solution

The fourth proportional to 12,472.43, 17,204.48 and 9,111.13 is: 12,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.43 : 17,204.48 = 9,111.13 : x
  2. Step 2: Convert to fraction form
    12,472.43/17,204.48 = 9,111.13/x
  3. Step 3: Cross multiply
    12,472.43x = 17,204.48 × 9,111.13
  4. Step 4: Simplify right side
    12,472.43x = 156,752,270.61
  5. Step 5: Solve for x
    x = 156,752,270.61/12,472.43
  6. Step 6: Final answer
    x = 12,567.90

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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.