Home / 15,398.12-21,249.42-8,324.54

Finding the Fourth Proportional to 15,398.12, 21,249.42 and 8,324.54

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Solution

The fourth proportional to 15,398.12, 21,249.42 and 8,324.54 is: 11,487.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.12 : 21,249.42 = 8,324.54 : x
  2. Step 2: Convert to fraction form
    15,398.12/21,249.42 = 8,324.54/x
  3. Step 3: Cross multiply
    15,398.12x = 21,249.42 × 8,324.54
  4. Step 4: Simplify right side
    15,398.12x = 176,891,540.52
  5. Step 5: Solve for x
    x = 176,891,540.52/15,398.12
  6. Step 6: Final answer
    x = 11,487.87

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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.