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Finding the Fourth Proportional to 18,195.30, 27,105.17 and 17,644.64

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Solution

The fourth proportional to 18,195.30, 27,105.17 and 17,644.64 is: 26,284.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,195.30 : 27,105.17 = 17,644.64 : x
  2. Step 2: Convert to fraction form
    18,195.30/27,105.17 = 17,644.64/x
  3. Step 3: Cross multiply
    18,195.30x = 27,105.17 × 17,644.64
  4. Step 4: Simplify right side
    18,195.30x = 478,260,743.04
  5. Step 5: Solve for x
    x = 478,260,743.04/18,195.30
  6. Step 6: Final answer
    x = 26,284.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.