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Finding the Fourth Proportional to 29,086.54, 40,139.80 and 17,149.16

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Solution

The fourth proportional to 29,086.54, 40,139.80 and 17,149.16 is: 23,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,086.54 : 40,139.80 = 17,149.16 : x
  2. Step 2: Convert to fraction form
    29,086.54/40,139.80 = 17,149.16/x
  3. Step 3: Cross multiply
    29,086.54x = 40,139.80 × 17,149.16
  4. Step 4: Simplify right side
    29,086.54x = 688,363,910.04
  5. Step 5: Solve for x
    x = 688,363,910.04/29,086.54
  6. Step 6: Final answer
    x = 23,666.07

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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.