Home / 38,650.87-57,987.38-18,935.20

Finding the Fourth Proportional to 38,650.87, 57,987.38 and 18,935.20

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Solution

The fourth proportional to 38,650.87, 57,987.38 and 18,935.20 is: 28,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,650.87 : 57,987.38 = 18,935.20 : x
  2. Step 2: Convert to fraction form
    38,650.87/57,987.38 = 18,935.20/x
  3. Step 3: Cross multiply
    38,650.87x = 57,987.38 × 18,935.20
  4. Step 4: Simplify right side
    38,650.87x = 1,098,002,543.10
  5. Step 5: Solve for x
    x = 1,098,002,543.10/38,650.87
  6. Step 6: Final answer
    x = 28,408.22

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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.