Home / 18,772.22-25,863.17-15,409.70

Finding the Fourth Proportional to 18,772.22, 25,863.17 and 15,409.70

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Solution

The fourth proportional to 18,772.22, 25,863.17 and 15,409.70 is: 21,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.22 : 25,863.17 = 15,409.70 : x
  2. Step 2: Convert to fraction form
    18,772.22/25,863.17 = 15,409.70/x
  3. Step 3: Cross multiply
    18,772.22x = 25,863.17 × 15,409.70
  4. Step 4: Simplify right side
    18,772.22x = 398,543,793.93
  5. Step 5: Solve for x
    x = 398,543,793.93/18,772.22
  6. Step 6: Final answer
    x = 21,230.52

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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.