Home / 15,398.16-21,249.36-8,324.55

Finding the Fourth Proportional to 15,398.16, 21,249.36 and 8,324.55

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Solution

The fourth proportional to 15,398.16, 21,249.36 and 8,324.55 is: 11,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.16 : 21,249.36 = 8,324.55 : x
  2. Step 2: Convert to fraction form
    15,398.16/21,249.36 = 8,324.55/x
  3. Step 3: Cross multiply
    15,398.16x = 21,249.36 × 8,324.55
  4. Step 4: Simplify right side
    15,398.16x = 176,891,359.79
  5. Step 5: Solve for x
    x = 176,891,359.79/15,398.16
  6. Step 6: Final answer
    x = 11,487.82

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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.