Home / 20,103.27-27,742.68-11,151.35

Finding the Fourth Proportional to 20,103.27, 27,742.68 and 11,151.35

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Solution

The fourth proportional to 20,103.27, 27,742.68 and 11,151.35 is: 15,388.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.27 : 27,742.68 = 11,151.35 : x
  2. Step 2: Convert to fraction form
    20,103.27/27,742.68 = 11,151.35/x
  3. Step 3: Cross multiply
    20,103.27x = 27,742.68 × 11,151.35
  4. Step 4: Simplify right side
    20,103.27x = 309,368,403.97
  5. Step 5: Solve for x
    x = 309,368,403.97/20,103.27
  6. Step 6: Final answer
    x = 15,388.96

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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.