Home / 22,747.91-31,391.79-12,676.78

Finding the Fourth Proportional to 22,747.91, 31,391.79 and 12,676.78

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Solution

The fourth proportional to 22,747.91, 31,391.79 and 12,676.78 is: 17,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,747.91 : 31,391.79 = 12,676.78 : x
  2. Step 2: Convert to fraction form
    22,747.91/31,391.79 = 12,676.78/x
  3. Step 3: Cross multiply
    22,747.91x = 31,391.79 × 12,676.78
  4. Step 4: Simplify right side
    22,747.91x = 397,946,658.68
  5. Step 5: Solve for x
    x = 397,946,658.68/22,747.91
  6. Step 6: Final answer
    x = 17,493.77

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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.