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Finding the Fourth Proportional to 11,689.92, 17,542.17 and 6,761.88

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Solution

The fourth proportional to 11,689.92, 17,542.17 and 6,761.88 is: 10,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.92 : 17,542.17 = 6,761.88 : x
  2. Step 2: Convert to fraction form
    11,689.92/17,542.17 = 6,761.88/x
  3. Step 3: Cross multiply
    11,689.92x = 17,542.17 × 6,761.88
  4. Step 4: Simplify right side
    11,689.92x = 118,618,048.48
  5. Step 5: Solve for x
    x = 118,618,048.48/11,689.92
  6. Step 6: Final answer
    x = 10,147.04

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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.