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Finding the Fourth Proportional to 18,463.56, 25,479.36 and 10,505.61

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Solution

The fourth proportional to 18,463.56, 25,479.36 and 10,505.61 is: 14,497.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.56 : 25,479.36 = 10,505.61 : x
  2. Step 2: Convert to fraction form
    18,463.56/25,479.36 = 10,505.61/x
  3. Step 3: Cross multiply
    18,463.56x = 25,479.36 × 10,505.61
  4. Step 4: Simplify right side
    18,463.56x = 267,676,219.21
  5. Step 5: Solve for x
    x = 267,676,219.21/18,463.56
  6. Step 6: Final answer
    x = 14,497.54

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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.