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Finding the Fourth Proportional to 18,081.18, 27,118.98 and 4,934.61

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Solution

The fourth proportional to 18,081.18, 27,118.98 and 4,934.61 is: 7,401.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.18 : 27,118.98 = 4,934.61 : x
  2. Step 2: Convert to fraction form
    18,081.18/27,118.98 = 4,934.61/x
  3. Step 3: Cross multiply
    18,081.18x = 27,118.98 × 4,934.61
  4. Step 4: Simplify right side
    18,081.18x = 133,821,589.90
  5. Step 5: Solve for x
    x = 133,821,589.90/18,081.18
  6. Step 6: Final answer
    x = 7,401.15

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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.