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Finding the Fourth Proportional to 27,916.92, 38,523.96 and 15,342.12

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Solution

The fourth proportional to 27,916.92, 38,523.96 and 15,342.12 is: 21,171.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,916.92 : 38,523.96 = 15,342.12 : x
  2. Step 2: Convert to fraction form
    27,916.92/38,523.96 = 15,342.12/x
  3. Step 3: Cross multiply
    27,916.92x = 38,523.96 × 15,342.12
  4. Step 4: Simplify right side
    27,916.92x = 591,039,217.20
  5. Step 5: Solve for x
    x = 591,039,217.20/27,916.92
  6. Step 6: Final answer
    x = 21,171.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.