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Finding the Fourth Proportional to 29,472.49, 40,660.02 and 18,138.57

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Solution

The fourth proportional to 29,472.49, 40,660.02 and 18,138.57 is: 25,023.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,472.49 : 40,660.02 = 18,138.57 : x
  2. Step 2: Convert to fraction form
    29,472.49/40,660.02 = 18,138.57/x
  3. Step 3: Cross multiply
    29,472.49x = 40,660.02 × 18,138.57
  4. Step 4: Simplify right side
    29,472.49x = 737,514,466.50
  5. Step 5: Solve for x
    x = 737,514,466.50/29,472.49
  6. Step 6: Final answer
    x = 25,023.83

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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.