Home / 20,104.20-27,742.74-11,151

Finding the Fourth Proportional to 20,104.20, 27,742.74 and 11,151

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Solution

The fourth proportional to 20,104.20, 27,742.74 and 11,151 is: 15,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.20 : 27,742.74 = 11,151 : x
  2. Step 2: Convert to fraction form
    20,104.20/27,742.74 = 11,151/x
  3. Step 3: Cross multiply
    20,104.20x = 27,742.74 × 11,151
  4. Step 4: Simplify right side
    20,104.20x = 309,359,293.74
  5. Step 5: Solve for x
    x = 309,359,293.74/20,104.20
  6. Step 6: Final answer
    x = 15,387.79

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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.