Home / 20,137.82-27,768.22-12,581.53

Finding the Fourth Proportional to 20,137.82, 27,768.22 and 12,581.53

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Solution

The fourth proportional to 20,137.82, 27,768.22 and 12,581.53 is: 17,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.82 : 27,768.22 = 12,581.53 : x
  2. Step 2: Convert to fraction form
    20,137.82/27,768.22 = 12,581.53/x
  3. Step 3: Cross multiply
    20,137.82x = 27,768.22 × 12,581.53
  4. Step 4: Simplify right side
    20,137.82x = 349,366,592.10
  5. Step 5: Solve for x
    x = 349,366,592.10/20,137.82
  6. Step 6: Final answer
    x = 17,348.78

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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.