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Finding the Fourth Proportional to 25,387.10, 38,102.52 and 12,250.52

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Solution

The fourth proportional to 25,387.10, 38,102.52 and 12,250.52 is: 18,386.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.10 : 38,102.52 = 12,250.52 : x
  2. Step 2: Convert to fraction form
    25,387.10/38,102.52 = 12,250.52/x
  3. Step 3: Cross multiply
    25,387.10x = 38,102.52 × 12,250.52
  4. Step 4: Simplify right side
    25,387.10x = 466,775,431.55
  5. Step 5: Solve for x
    x = 466,775,431.55/25,387.10
  6. Step 6: Final answer
    x = 18,386.33

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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.