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Finding the Fourth Proportional to 18,132.32, 27,220.48 and 17,213.76

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Solution

The fourth proportional to 18,132.32, 27,220.48 and 17,213.76 is: 25,841.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,132.32 : 27,220.48 = 17,213.76 : x
  2. Step 2: Convert to fraction form
    18,132.32/27,220.48 = 17,213.76/x
  3. Step 3: Cross multiply
    18,132.32x = 27,220.48 × 17,213.76
  4. Step 4: Simplify right side
    18,132.32x = 468,566,809.80
  5. Step 5: Solve for x
    x = 468,566,809.80/18,132.32
  6. Step 6: Final answer
    x = 25,841.53

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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.