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Finding the Fourth Proportional to 25,412.30, 38,114.85 and 7,883.90

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Solution

The fourth proportional to 25,412.30, 38,114.85 and 7,883.90 is: 11,824.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,412.30 : 38,114.85 = 7,883.90 : x
  2. Step 2: Convert to fraction form
    25,412.30/38,114.85 = 7,883.90/x
  3. Step 3: Cross multiply
    25,412.30x = 38,114.85 × 7,883.90
  4. Step 4: Simplify right side
    25,412.30x = 300,493,665.92
  5. Step 5: Solve for x
    x = 300,493,665.92/25,412.30
  6. Step 6: Final answer
    x = 11,824.73

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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.