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Finding the Fourth Proportional to 18,751.92, 25,825.14 and 18,343.68

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Solution

The fourth proportional to 18,751.92, 25,825.14 and 18,343.68 is: 25,262.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.92 : 25,825.14 = 18,343.68 : x
  2. Step 2: Convert to fraction form
    18,751.92/25,825.14 = 18,343.68/x
  3. Step 3: Cross multiply
    18,751.92x = 25,825.14 × 18,343.68
  4. Step 4: Simplify right side
    18,751.92x = 473,728,104.12
  5. Step 5: Solve for x
    x = 473,728,104.12/18,751.92
  6. Step 6: Final answer
    x = 25,262.91

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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.