Home / 83,472.38-125,213.13-21,143.42

Finding the Fourth Proportional to 83,472.38, 125,213.13 and 21,143.42

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Solution

The fourth proportional to 83,472.38, 125,213.13 and 21,143.42 is: 31,716.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,472.38 : 125,213.13 = 21,143.42 : x
  2. Step 2: Convert to fraction form
    83,472.38/125,213.13 = 21,143.42/x
  3. Step 3: Cross multiply
    83,472.38x = 125,213.13 × 21,143.42
  4. Step 4: Simplify right side
    83,472.38x = 2,647,433,797.10
  5. Step 5: Solve for x
    x = 2,647,433,797.10/83,472.38
  6. Step 6: Final answer
    x = 31,716.29

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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.