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Finding the Fourth Proportional to 18,149.88, 27,205.38 and 10,342.20

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Solution

The fourth proportional to 18,149.88, 27,205.38 and 10,342.20 is: 15,502.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.88 : 27,205.38 = 10,342.20 : x
  2. Step 2: Convert to fraction form
    18,149.88/27,205.38 = 10,342.20/x
  3. Step 3: Cross multiply
    18,149.88x = 27,205.38 × 10,342.20
  4. Step 4: Simplify right side
    18,149.88x = 281,363,481.04
  5. Step 5: Solve for x
    x = 281,363,481.04/18,149.88
  6. Step 6: Final answer
    x = 15,502.22

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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.