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Finding the Fourth Proportional to 14,761.28, 20,372 and 11,028.80

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Solution

The fourth proportional to 14,761.28, 20,372 and 11,028.80 is: 15,220.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,761.28 : 20,372 = 11,028.80 : x
  2. Step 2: Convert to fraction form
    14,761.28/20,372 = 11,028.80/x
  3. Step 3: Cross multiply
    14,761.28x = 20,372 × 11,028.80
  4. Step 4: Simplify right side
    14,761.28x = 224,678,713.60
  5. Step 5: Solve for x
    x = 224,678,713.60/14,761.28
  6. Step 6: Final answer
    x = 15,220.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.