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Finding the Fourth Proportional to 18,245.92, 25,179.38 and 9,862.42

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Solution

The fourth proportional to 18,245.92, 25,179.38 and 9,862.42 is: 13,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.92 : 25,179.38 = 9,862.42 : x
  2. Step 2: Convert to fraction form
    18,245.92/25,179.38 = 9,862.42/x
  3. Step 3: Cross multiply
    18,245.92x = 25,179.38 × 9,862.42
  4. Step 4: Simplify right side
    18,245.92x = 248,329,620.90
  5. Step 5: Solve for x
    x = 248,329,620.90/18,245.92
  6. Step 6: Final answer
    x = 13,610.15

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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.