Home / 20,081.38-27,713.02-12,122.04

Finding the Fourth Proportional to 20,081.38, 27,713.02 and 12,122.04

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Solution

The fourth proportional to 20,081.38, 27,713.02 and 12,122.04 is: 16,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.38 : 27,713.02 = 12,122.04 : x
  2. Step 2: Convert to fraction form
    20,081.38/27,713.02 = 12,122.04/x
  3. Step 3: Cross multiply
    20,081.38x = 27,713.02 × 12,122.04
  4. Step 4: Simplify right side
    20,081.38x = 335,938,336.96
  5. Step 5: Solve for x
    x = 335,938,336.96/20,081.38
  6. Step 6: Final answer
    x = 16,728.85

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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.