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Finding the Fourth Proportional to 18,236.79, 27,354.33 and 18,039.15

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Solution

The fourth proportional to 18,236.79, 27,354.33 and 18,039.15 is: 27,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.79 : 27,354.33 = 18,039.15 : x
  2. Step 2: Convert to fraction form
    18,236.79/27,354.33 = 18,039.15/x
  3. Step 3: Cross multiply
    18,236.79x = 27,354.33 × 18,039.15
  4. Step 4: Simplify right side
    18,236.79x = 493,448,862.02
  5. Step 5: Solve for x
    x = 493,448,862.02/18,236.79
  6. Step 6: Final answer
    x = 27,057.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.