Home / 20,122.42-27,769.38-11,169.79

Finding the Fourth Proportional to 20,122.42, 27,769.38 and 11,169.79

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Solution

The fourth proportional to 20,122.42, 27,769.38 and 11,169.79 is: 15,414.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.42 : 27,769.38 = 11,169.79 : x
  2. Step 2: Convert to fraction form
    20,122.42/27,769.38 = 11,169.79/x
  3. Step 3: Cross multiply
    20,122.42x = 27,769.38 × 11,169.79
  4. Step 4: Simplify right side
    20,122.42x = 310,178,143.03
  5. Step 5: Solve for x
    x = 310,178,143.03/20,122.42
  6. Step 6: Final answer
    x = 15,414.55

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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.