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Finding the Fourth Proportional to 18,042.85, 27,081.15 and 9,164.53

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Solution

The fourth proportional to 18,042.85, 27,081.15 and 9,164.53 is: 13,755.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,042.85 : 27,081.15 = 9,164.53 : x
  2. Step 2: Convert to fraction form
    18,042.85/27,081.15 = 9,164.53/x
  3. Step 3: Cross multiply
    18,042.85x = 27,081.15 × 9,164.53
  4. Step 4: Simplify right side
    18,042.85x = 248,186,011.61
  5. Step 5: Solve for x
    x = 248,186,011.61/18,042.85
  6. Step 6: Final answer
    x = 13,755.37

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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.