Home / 22,783.42-31,418.13-15,229.78

Finding the Fourth Proportional to 22,783.42, 31,418.13 and 15,229.78

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Solution

The fourth proportional to 22,783.42, 31,418.13 and 15,229.78 is: 21,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,783.42 : 31,418.13 = 15,229.78 : x
  2. Step 2: Convert to fraction form
    22,783.42/31,418.13 = 15,229.78/x
  3. Step 3: Cross multiply
    22,783.42x = 31,418.13 × 15,229.78
  4. Step 4: Simplify right side
    22,783.42x = 478,491,207.91
  5. Step 5: Solve for x
    x = 478,491,207.91/22,783.42
  6. Step 6: Final answer
    x = 21,001.73

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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.