Home / 21,839.20-32,764.32-8,691.52

Finding the Fourth Proportional to 21,839.20, 32,764.32 and 8,691.52

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Solution

The fourth proportional to 21,839.20, 32,764.32 and 8,691.52 is: 13,039.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.20 : 32,764.32 = 8,691.52 : x
  2. Step 2: Convert to fraction form
    21,839.20/32,764.32 = 8,691.52/x
  3. Step 3: Cross multiply
    21,839.20x = 32,764.32 × 8,691.52
  4. Step 4: Simplify right side
    21,839.20x = 284,771,742.57
  5. Step 5: Solve for x
    x = 284,771,742.57/21,839.20
  6. Step 6: Final answer
    x = 13,039.48

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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.