Home / 20,198.39-27,872.84-11,245.79

Finding the Fourth Proportional to 20,198.39, 27,872.84 and 11,245.79

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Solution

The fourth proportional to 20,198.39, 27,872.84 and 11,245.79 is: 15,518.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.39 : 27,872.84 = 11,245.79 : x
  2. Step 2: Convert to fraction form
    20,198.39/27,872.84 = 11,245.79/x
  3. Step 3: Cross multiply
    20,198.39x = 27,872.84 × 11,245.79
  4. Step 4: Simplify right side
    20,198.39x = 313,452,203.14
  5. Step 5: Solve for x
    x = 313,452,203.14/20,198.39
  6. Step 6: Final answer
    x = 15,518.68

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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.