Home / 18,398.08-25,380.72-11,321.92

Finding the Fourth Proportional to 18,398.08, 25,380.72 and 11,321.92

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Solution

The fourth proportional to 18,398.08, 25,380.72 and 11,321.92 is: 15,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.08 : 25,380.72 = 11,321.92 : x
  2. Step 2: Convert to fraction form
    18,398.08/25,380.72 = 11,321.92/x
  3. Step 3: Cross multiply
    18,398.08x = 25,380.72 × 11,321.92
  4. Step 4: Simplify right side
    18,398.08x = 287,358,481.38
  5. Step 5: Solve for x
    x = 287,358,481.38/18,398.08
  6. Step 6: Final answer
    x = 15,618.94

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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.