Home / 38,781.28-58,180.28-12,488.07

Finding the Fourth Proportional to 38,781.28, 58,180.28 and 12,488.07

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Solution

The fourth proportional to 38,781.28, 58,180.28 and 12,488.07 is: 18,734.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,781.28 : 58,180.28 = 12,488.07 : x
  2. Step 2: Convert to fraction form
    38,781.28/58,180.28 = 12,488.07/x
  3. Step 3: Cross multiply
    38,781.28x = 58,180.28 × 12,488.07
  4. Step 4: Simplify right side
    38,781.28x = 726,559,565.00
  5. Step 5: Solve for x
    x = 726,559,565.00/38,781.28
  6. Step 6: Final answer
    x = 18,734.80

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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.