Home / 19,687.57-27,170.97-12,132.29

Finding the Fourth Proportional to 19,687.57, 27,170.97 and 12,132.29

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Solution

The fourth proportional to 19,687.57, 27,170.97 and 12,132.29 is: 16,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.57 : 27,170.97 = 12,132.29 : x
  2. Step 2: Convert to fraction form
    19,687.57/27,170.97 = 12,132.29/x
  3. Step 3: Cross multiply
    19,687.57x = 27,170.97 × 12,132.29
  4. Step 4: Simplify right side
    19,687.57x = 329,646,087.62
  5. Step 5: Solve for x
    x = 329,646,087.62/19,687.57
  6. Step 6: Final answer
    x = 16,743.87

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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.