Home / 18,489.44-25,517.22-10,938.20

Finding the Fourth Proportional to 18,489.44, 25,517.22 and 10,938.20

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Solution

The fourth proportional to 18,489.44, 25,517.22 and 10,938.20 is: 15,095.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.44 : 25,517.22 = 10,938.20 : x
  2. Step 2: Convert to fraction form
    18,489.44/25,517.22 = 10,938.20/x
  3. Step 3: Cross multiply
    18,489.44x = 25,517.22 × 10,938.20
  4. Step 4: Simplify right side
    18,489.44x = 279,112,519.60
  5. Step 5: Solve for x
    x = 279,112,519.60/18,489.44
  6. Step 6: Final answer
    x = 15,095.78

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1.5x scale

Why These Related Problems?

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