Home / 33,121.46-45,709.61-18,781.89

Finding the Fourth Proportional to 33,121.46, 45,709.61 and 18,781.89

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Solution

The fourth proportional to 33,121.46, 45,709.61 and 18,781.89 is: 25,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,121.46 : 45,709.61 = 18,781.89 : x
  2. Step 2: Convert to fraction form
    33,121.46/45,709.61 = 18,781.89/x
  3. Step 3: Cross multiply
    33,121.46x = 45,709.61 × 18,781.89
  4. Step 4: Simplify right side
    33,121.46x = 858,512,773.05
  5. Step 5: Solve for x
    x = 858,512,773.05/33,121.46
  6. Step 6: Final answer
    x = 25,920.14

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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.