Home / 22,115.89-30,517.92-13,161.95

Finding the Fourth Proportional to 22,115.89, 30,517.92 and 13,161.95

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Solution

The fourth proportional to 22,115.89, 30,517.92 and 13,161.95 is: 18,162.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.89 : 30,517.92 = 13,161.95 : x
  2. Step 2: Convert to fraction form
    22,115.89/30,517.92 = 13,161.95/x
  3. Step 3: Cross multiply
    22,115.89x = 30,517.92 × 13,161.95
  4. Step 4: Simplify right side
    22,115.89x = 401,675,135.20
  5. Step 5: Solve for x
    x = 401,675,135.20/22,115.89
  6. Step 6: Final answer
    x = 18,162.29

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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.