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Finding the Fourth Proportional to 20,696.38, 31,049.15 and 7,548.71

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Solution

The fourth proportional to 20,696.38, 31,049.15 and 7,548.71 is: 11,324.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.38 : 31,049.15 = 7,548.71 : x
  2. Step 2: Convert to fraction form
    20,696.38/31,049.15 = 7,548.71/x
  3. Step 3: Cross multiply
    20,696.38x = 31,049.15 × 7,548.71
  4. Step 4: Simplify right side
    20,696.38x = 234,380,836.11
  5. Step 5: Solve for x
    x = 234,380,836.11/20,696.38
  6. Step 6: Final answer
    x = 11,324.73

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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.