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Finding the Fourth Proportional to 18,149.78, 27,220.57 and 6,901.11

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Solution

The fourth proportional to 18,149.78, 27,220.57 and 6,901.11 is: 10,350.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.78 : 27,220.57 = 6,901.11 : x
  2. Step 2: Convert to fraction form
    18,149.78/27,220.57 = 6,901.11/x
  3. Step 3: Cross multiply
    18,149.78x = 27,220.57 × 6,901.11
  4. Step 4: Simplify right side
    18,149.78x = 187,852,079.54
  5. Step 5: Solve for x
    x = 187,852,079.54/18,149.78
  6. Step 6: Final answer
    x = 10,350.10

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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.