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Finding the Fourth Proportional to 25,490.43, 38,230.79 and 9,906.03

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Solution

The fourth proportional to 25,490.43, 38,230.79 and 9,906.03 is: 14,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,490.43 : 38,230.79 = 9,906.03 : x
  2. Step 2: Convert to fraction form
    25,490.43/38,230.79 = 9,906.03/x
  3. Step 3: Cross multiply
    25,490.43x = 38,230.79 × 9,906.03
  4. Step 4: Simplify right side
    25,490.43x = 378,715,303.13
  5. Step 5: Solve for x
    x = 378,715,303.13/25,490.43
  6. Step 6: Final answer
    x = 14,857.16

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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.