Home / 20,178.11-27,845.66-11,104.03

Finding the Fourth Proportional to 20,178.11, 27,845.66 and 11,104.03

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Solution

The fourth proportional to 20,178.11, 27,845.66 and 11,104.03 is: 15,323.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.11 : 27,845.66 = 11,104.03 : x
  2. Step 2: Convert to fraction form
    20,178.11/27,845.66 = 11,104.03/x
  3. Step 3: Cross multiply
    20,178.11x = 27,845.66 × 11,104.03
  4. Step 4: Simplify right side
    20,178.11x = 309,198,904.78
  5. Step 5: Solve for x
    x = 309,198,904.78/20,178.11
  6. Step 6: Final answer
    x = 15,323.48

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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.