Home / 20,176.72-27,839.68-11,791.60

Finding the Fourth Proportional to 20,176.72, 27,839.68 and 11,791.60

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Solution

The fourth proportional to 20,176.72, 27,839.68 and 11,791.60 is: 16,269.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.72 : 27,839.68 = 11,791.60 : x
  2. Step 2: Convert to fraction form
    20,176.72/27,839.68 = 11,791.60/x
  3. Step 3: Cross multiply
    20,176.72x = 27,839.68 × 11,791.60
  4. Step 4: Simplify right side
    20,176.72x = 328,274,370.69
  5. Step 5: Solve for x
    x = 328,274,370.69/20,176.72
  6. Step 6: Final answer
    x = 16,269.96

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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.