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Finding the Fourth Proportional to 18,892.40, 28,299.69 and 11,082.38

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Solution

The fourth proportional to 18,892.40, 28,299.69 and 11,082.38 is: 16,600.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.40 : 28,299.69 = 11,082.38 : x
  2. Step 2: Convert to fraction form
    18,892.40/28,299.69 = 11,082.38/x
  3. Step 3: Cross multiply
    18,892.40x = 28,299.69 × 11,082.38
  4. Step 4: Simplify right side
    18,892.40x = 313,627,776.96
  5. Step 5: Solve for x
    x = 313,627,776.96/18,892.40
  6. Step 6: Final answer
    x = 16,600.74

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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.