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Finding the Fourth Proportional to 20,463.44, 30,696.98 and 8,773.92

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Solution

The fourth proportional to 20,463.44, 30,696.98 and 8,773.92 is: 13,161.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.44 : 30,696.98 = 8,773.92 : x
  2. Step 2: Convert to fraction form
    20,463.44/30,696.98 = 8,773.92/x
  3. Step 3: Cross multiply
    20,463.44x = 30,696.98 × 8,773.92
  4. Step 4: Simplify right side
    20,463.44x = 269,332,802.89
  5. Step 5: Solve for x
    x = 269,332,802.89/20,463.44
  6. Step 6: Final answer
    x = 13,161.66

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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.