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Finding the Fourth Proportional to 29,310.87, 40,448.87 and 15,882.13

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Solution

The fourth proportional to 29,310.87, 40,448.87 and 15,882.13 is: 21,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,310.87 : 40,448.87 = 15,882.13 : x
  2. Step 2: Convert to fraction form
    29,310.87/40,448.87 = 15,882.13/x
  3. Step 3: Cross multiply
    29,310.87x = 40,448.87 × 15,882.13
  4. Step 4: Simplify right side
    29,310.87x = 642,414,211.69
  5. Step 5: Solve for x
    x = 642,414,211.69/29,310.87
  6. Step 6: Final answer
    x = 21,917.27

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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.