Home / 22,638.90-31,234.40-13,077.49

Finding the Fourth Proportional to 22,638.90, 31,234.40 and 13,077.49

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Solution

The fourth proportional to 22,638.90, 31,234.40 and 13,077.49 is: 18,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.90 : 31,234.40 = 13,077.49 : x
  2. Step 2: Convert to fraction form
    22,638.90/31,234.40 = 13,077.49/x
  3. Step 3: Cross multiply
    22,638.90x = 31,234.40 × 13,077.49
  4. Step 4: Simplify right side
    22,638.90x = 408,467,553.66
  5. Step 5: Solve for x
    x = 408,467,553.66/22,638.90
  6. Step 6: Final answer
    x = 18,042.73

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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.