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Finding the Fourth Proportional to 18,008.80, 24,851.92 and 9,942.52

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Solution

The fourth proportional to 18,008.80, 24,851.92 and 9,942.52 is: 13,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.80 : 24,851.92 = 9,942.52 : x
  2. Step 2: Convert to fraction form
    18,008.80/24,851.92 = 9,942.52/x
  3. Step 3: Cross multiply
    18,008.80x = 24,851.92 × 9,942.52
  4. Step 4: Simplify right side
    18,008.80x = 247,090,711.64
  5. Step 5: Solve for x
    x = 247,090,711.64/18,008.80
  6. Step 6: Final answer
    x = 13,720.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.