Home / 38,753.38-58,128-12,456.10

Finding the Fourth Proportional to 38,753.38, 58,128 and 12,456.10

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Solution

The fourth proportional to 38,753.38, 58,128 and 12,456.10 is: 18,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,753.38 : 58,128 = 12,456.10 : x
  2. Step 2: Convert to fraction form
    38,753.38/58,128 = 12,456.10/x
  3. Step 3: Cross multiply
    38,753.38x = 58,128 × 12,456.10
  4. Step 4: Simplify right side
    38,753.38x = 724,048,180.80
  5. Step 5: Solve for x
    x = 724,048,180.80/38,753.38
  6. Step 6: Final answer
    x = 18,683.48

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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.