Home / 20,103.28-27,742.97-11,150.49

Finding the Fourth Proportional to 20,103.28, 27,742.97 and 11,150.49

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Solution

The fourth proportional to 20,103.28, 27,742.97 and 11,150.49 is: 15,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.28 : 27,742.97 = 11,150.49 : x
  2. Step 2: Convert to fraction form
    20,103.28/27,742.97 = 11,150.49/x
  3. Step 3: Cross multiply
    20,103.28x = 27,742.97 × 11,150.49
  4. Step 4: Simplify right side
    20,103.28x = 309,347,709.56
  5. Step 5: Solve for x
    x = 309,347,709.56/20,103.28
  6. Step 6: Final answer
    x = 15,387.92

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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.