Home / 11,581.40-17,372.10-11,127.80

Finding the Fourth Proportional to 11,581.40, 17,372.10 and 11,127.80

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Solution

The fourth proportional to 11,581.40, 17,372.10 and 11,127.80 is: 16,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.40 : 17,372.10 = 11,127.80 : x
  2. Step 2: Convert to fraction form
    11,581.40/17,372.10 = 11,127.80/x
  3. Step 3: Cross multiply
    11,581.40x = 17,372.10 × 11,127.80
  4. Step 4: Simplify right side
    11,581.40x = 193,313,254.38
  5. Step 5: Solve for x
    x = 193,313,254.38/11,581.40
  6. Step 6: Final answer
    x = 16,691.70

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1.5x scale

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.