Home / 20,041.43-27,651.97-11,971.78

Finding the Fourth Proportional to 20,041.43, 27,651.97 and 11,971.78

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Solution

The fourth proportional to 20,041.43, 27,651.97 and 11,971.78 is: 16,517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,041.43 : 27,651.97 = 11,971.78 : x
  2. Step 2: Convert to fraction form
    20,041.43/27,651.97 = 11,971.78/x
  3. Step 3: Cross multiply
    20,041.43x = 27,651.97 × 11,971.78
  4. Step 4: Simplify right side
    20,041.43x = 331,043,319.80
  5. Step 5: Solve for x
    x = 331,043,319.80/20,041.43
  6. Step 6: Final answer
    x = 16,517.95

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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.