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Finding the Fourth Proportional to 20,337.80, 30,519.66 and 8,651

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Solution

The fourth proportional to 20,337.80, 30,519.66 and 8,651 is: 12,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.80 : 30,519.66 = 8,651 : x
  2. Step 2: Convert to fraction form
    20,337.80/30,519.66 = 8,651/x
  3. Step 3: Cross multiply
    20,337.80x = 30,519.66 × 8,651
  4. Step 4: Simplify right side
    20,337.80x = 264,025,578.66
  5. Step 5: Solve for x
    x = 264,025,578.66/20,337.80
  6. Step 6: Final answer
    x = 12,982.01

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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.