Home / 20,119.97-27,765.33-11,167.55

Finding the Fourth Proportional to 20,119.97, 27,765.33 and 11,167.55

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Solution

The fourth proportional to 20,119.97, 27,765.33 and 11,167.55 is: 15,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.97 : 27,765.33 = 11,167.55 : x
  2. Step 2: Convert to fraction form
    20,119.97/27,765.33 = 11,167.55/x
  3. Step 3: Cross multiply
    20,119.97x = 27,765.33 × 11,167.55
  4. Step 4: Simplify right side
    20,119.97x = 310,070,572.21
  5. Step 5: Solve for x
    x = 310,070,572.21/20,119.97
  6. Step 6: Final answer
    x = 15,411.09

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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.