Home / 20,198.12-27,872.91-11,245.43

Finding the Fourth Proportional to 20,198.12, 27,872.91 and 11,245.43

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Solution

The fourth proportional to 20,198.12, 27,872.91 and 11,245.43 is: 15,518.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.12 : 27,872.91 = 11,245.43 : x
  2. Step 2: Convert to fraction form
    20,198.12/27,872.91 = 11,245.43/x
  3. Step 3: Cross multiply
    20,198.12x = 27,872.91 × 11,245.43
  4. Step 4: Simplify right side
    20,198.12x = 313,442,927.98
  5. Step 5: Solve for x
    x = 313,442,927.98/20,198.12
  6. Step 6: Final answer
    x = 15,518.42

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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.