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Finding the Fourth Proportional to 29,065.92, 40,109.76 and 17,129.76

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Solution

The fourth proportional to 29,065.92, 40,109.76 and 17,129.76 is: 23,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,065.92 : 40,109.76 = 17,129.76 : x
  2. Step 2: Convert to fraction form
    29,065.92/40,109.76 = 17,129.76/x
  3. Step 3: Cross multiply
    29,065.92x = 40,109.76 × 17,129.76
  4. Step 4: Simplify right side
    29,065.92x = 687,070,562.46
  5. Step 5: Solve for x
    x = 687,070,562.46/29,065.92
  6. Step 6: Final answer
    x = 23,638.36

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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.