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Finding the Fourth Proportional to 18,017.62, 27,019.17 and 7,480.46

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Solution

The fourth proportional to 18,017.62, 27,019.17 and 7,480.46 is: 11,217.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.62 : 27,019.17 = 7,480.46 : x
  2. Step 2: Convert to fraction form
    18,017.62/27,019.17 = 7,480.46/x
  3. Step 3: Cross multiply
    18,017.62x = 27,019.17 × 7,480.46
  4. Step 4: Simplify right side
    18,017.62x = 202,115,887.97
  5. Step 5: Solve for x
    x = 202,115,887.97/18,017.62
  6. Step 6: Final answer
    x = 11,217.68

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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.