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Finding the Fourth Proportional to 17,308.19, 25,935.85 and 8,990.90

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Solution

The fourth proportional to 17,308.19, 25,935.85 and 8,990.90 is: 13,472.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,308.19 : 25,935.85 = 8,990.90 : x
  2. Step 2: Convert to fraction form
    17,308.19/25,935.85 = 8,990.90/x
  3. Step 3: Cross multiply
    17,308.19x = 25,935.85 × 8,990.90
  4. Step 4: Simplify right side
    17,308.19x = 233,186,481.61
  5. Step 5: Solve for x
    x = 233,186,481.61/17,308.19
  6. Step 6: Final answer
    x = 13,472.61

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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.