Home / 20,144.97-27,791.12-13,424.04

Finding the Fourth Proportional to 20,144.97, 27,791.12 and 13,424.04

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Solution

The fourth proportional to 20,144.97, 27,791.12 and 13,424.04 is: 18,519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.97 : 27,791.12 = 13,424.04 : x
  2. Step 2: Convert to fraction form
    20,144.97/27,791.12 = 13,424.04/x
  3. Step 3: Cross multiply
    20,144.97x = 27,791.12 × 13,424.04
  4. Step 4: Simplify right side
    20,144.97x = 373,069,039.40
  5. Step 5: Solve for x
    x = 373,069,039.40/20,144.97
  6. Step 6: Final answer
    x = 18,519.22

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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.