Home / 20,103.17-27,742.19-11,150.69

Finding the Fourth Proportional to 20,103.17, 27,742.19 and 11,150.69

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Solution

The fourth proportional to 20,103.17, 27,742.19 and 11,150.69 is: 15,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.17 : 27,742.19 = 11,150.69 : x
  2. Step 2: Convert to fraction form
    20,103.17/27,742.19 = 11,150.69/x
  3. Step 3: Cross multiply
    20,103.17x = 27,742.19 × 11,150.69
  4. Step 4: Simplify right side
    20,103.17x = 309,344,366.15
  5. Step 5: Solve for x
    x = 309,344,366.15/20,103.17
  6. Step 6: Final answer
    x = 15,387.84

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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.