Home / 20,100.38-27,738.14-11,147.84

Finding the Fourth Proportional to 20,100.38, 27,738.14 and 11,147.84

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Solution

The fourth proportional to 20,100.38, 27,738.14 and 11,147.84 is: 15,383.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.38 : 27,738.14 = 11,147.84 : x
  2. Step 2: Convert to fraction form
    20,100.38/27,738.14 = 11,147.84/x
  3. Step 3: Cross multiply
    20,100.38x = 27,738.14 × 11,147.84
  4. Step 4: Simplify right side
    20,100.38x = 309,220,346.62
  5. Step 5: Solve for x
    x = 309,220,346.62/20,100.38
  6. Step 6: Final answer
    x = 15,383.81

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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.