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Finding the Fourth Proportional to 18,375.52, 25,358.22 and 9,992

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Solution

The fourth proportional to 18,375.52, 25,358.22 and 9,992 is: 13,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.52 : 25,358.22 = 9,992 : x
  2. Step 2: Convert to fraction form
    18,375.52/25,358.22 = 9,992/x
  3. Step 3: Cross multiply
    18,375.52x = 25,358.22 × 9,992
  4. Step 4: Simplify right side
    18,375.52x = 253,379,334.24
  5. Step 5: Solve for x
    x = 253,379,334.24/18,375.52
  6. Step 6: Final answer
    x = 13,788.96

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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.