Home / 22,115.70-30,517.66-13,161.76

Finding the Fourth Proportional to 22,115.70, 30,517.66 and 13,161.76

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Solution

The fourth proportional to 22,115.70, 30,517.66 and 13,161.76 is: 18,162.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.70 : 30,517.66 = 13,161.76 : x
  2. Step 2: Convert to fraction form
    22,115.70/30,517.66 = 13,161.76/x
  3. Step 3: Cross multiply
    22,115.70x = 30,517.66 × 13,161.76
  4. Step 4: Simplify right side
    22,115.70x = 401,666,007.48
  5. Step 5: Solve for x
    x = 401,666,007.48/22,115.70
  6. Step 6: Final answer
    x = 18,162.03

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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.