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Finding the Fourth Proportional to 19,472.92, 29,211.42 and 6,991.12

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Solution

The fourth proportional to 19,472.92, 29,211.42 and 6,991.12 is: 10,487.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,472.92 : 29,211.42 = 6,991.12 : x
  2. Step 2: Convert to fraction form
    19,472.92/29,211.42 = 6,991.12/x
  3. Step 3: Cross multiply
    19,472.92x = 29,211.42 × 6,991.12
  4. Step 4: Simplify right side
    19,472.92x = 204,220,542.59
  5. Step 5: Solve for x
    x = 204,220,542.59/19,472.92
  6. Step 6: Final answer
    x = 10,487.41

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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.