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Finding the Fourth Proportional to 17,321.57, 25,982.70 and 7,959.03

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Solution

The fourth proportional to 17,321.57, 25,982.70 and 7,959.03 is: 11,938.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,321.57 : 25,982.70 = 7,959.03 : x
  2. Step 2: Convert to fraction form
    17,321.57/25,982.70 = 7,959.03/x
  3. Step 3: Cross multiply
    17,321.57x = 25,982.70 × 7,959.03
  4. Step 4: Simplify right side
    17,321.57x = 206,797,203.11
  5. Step 5: Solve for x
    x = 206,797,203.11/17,321.57
  6. Step 6: Final answer
    x = 11,938.71

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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.