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Finding the Fourth Proportional to 17,172.80, 25,761.12 and 5,481.92

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Solution

The fourth proportional to 17,172.80, 25,761.12 and 5,481.92 is: 8,223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,172.80 : 25,761.12 = 5,481.92 : x
  2. Step 2: Convert to fraction form
    17,172.80/25,761.12 = 5,481.92/x
  3. Step 3: Cross multiply
    17,172.80x = 25,761.12 × 5,481.92
  4. Step 4: Simplify right side
    17,172.80x = 141,220,398.95
  5. Step 5: Solve for x
    x = 141,220,398.95/17,172.80
  6. Step 6: Final answer
    x = 8,223.49

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1.5x scale

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.