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Finding the Fourth Proportional to 20,523.92, 30,792 and 7,377.44

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Solution

The fourth proportional to 20,523.92, 30,792 and 7,377.44 is: 11,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.92 : 30,792 = 7,377.44 : x
  2. Step 2: Convert to fraction form
    20,523.92/30,792 = 7,377.44/x
  3. Step 3: Cross multiply
    20,523.92x = 30,792 × 7,377.44
  4. Step 4: Simplify right side
    20,523.92x = 227,166,132.48
  5. Step 5: Solve for x
    x = 227,166,132.48/20,523.92
  6. Step 6: Final answer
    x = 11,068.36

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Why These Related Problems?

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