Home / 33,121.39-45,694.03-18,778.20

Finding the Fourth Proportional to 33,121.39, 45,694.03 and 18,778.20

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Solution

The fourth proportional to 33,121.39, 45,694.03 and 18,778.20 is: 25,906.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,121.39 : 45,694.03 = 18,778.20 : x
  2. Step 2: Convert to fraction form
    33,121.39/45,694.03 = 18,778.20/x
  3. Step 3: Cross multiply
    33,121.39x = 45,694.03 × 18,778.20
  4. Step 4: Simplify right side
    33,121.39x = 858,051,634.15
  5. Step 5: Solve for x
    x = 858,051,634.15/33,121.39
  6. Step 6: Final answer
    x = 25,906.27

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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.