Home / 33,138.97-45,733.38-18,991.85

Finding the Fourth Proportional to 33,138.97, 45,733.38 and 18,991.85

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Solution

The fourth proportional to 33,138.97, 45,733.38 and 18,991.85 is: 26,209.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,138.97 : 45,733.38 = 18,991.85 : x
  2. Step 2: Convert to fraction form
    33,138.97/45,733.38 = 18,991.85/x
  3. Step 3: Cross multiply
    33,138.97x = 45,733.38 × 18,991.85
  4. Step 4: Simplify right side
    33,138.97x = 868,561,193.07
  5. Step 5: Solve for x
    x = 868,561,193.07/33,138.97
  6. Step 6: Final answer
    x = 26,209.66

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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.