Home / 20,197.80-27,872.24-11,245.07

Finding the Fourth Proportional to 20,197.80, 27,872.24 and 11,245.07

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Solution

The fourth proportional to 20,197.80, 27,872.24 and 11,245.07 is: 15,517.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,197.80 : 27,872.24 = 11,245.07 : x
  2. Step 2: Convert to fraction form
    20,197.80/27,872.24 = 11,245.07/x
  3. Step 3: Cross multiply
    20,197.80x = 27,872.24 × 11,245.07
  4. Step 4: Simplify right side
    20,197.80x = 313,425,303.31
  5. Step 5: Solve for x
    x = 313,425,303.31/20,197.80
  6. Step 6: Final answer
    x = 15,517.79

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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.