Home / 20,162.42-27,825.12-11,209.73

Finding the Fourth Proportional to 20,162.42, 27,825.12 and 11,209.73

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Solution

The fourth proportional to 20,162.42, 27,825.12 and 11,209.73 is: 15,469.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.42 : 27,825.12 = 11,209.73 : x
  2. Step 2: Convert to fraction form
    20,162.42/27,825.12 = 11,209.73/x
  3. Step 3: Cross multiply
    20,162.42x = 27,825.12 × 11,209.73
  4. Step 4: Simplify right side
    20,162.42x = 311,912,082.42
  5. Step 5: Solve for x
    x = 311,912,082.42/20,162.42
  6. Step 6: Final answer
    x = 15,469.97

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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.