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Finding the Fourth Proportional to 18,728.96, 25,844.81 and 10,229.36

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Solution

The fourth proportional to 18,728.96, 25,844.81 and 10,229.36 is: 14,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.96 : 25,844.81 = 10,229.36 : x
  2. Step 2: Convert to fraction form
    18,728.96/25,844.81 = 10,229.36/x
  3. Step 3: Cross multiply
    18,728.96x = 25,844.81 × 10,229.36
  4. Step 4: Simplify right side
    18,728.96x = 264,375,685.25
  5. Step 5: Solve for x
    x = 264,375,685.25/18,728.96
  6. Step 6: Final answer
    x = 14,115.88

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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.