Home / 33,120.70-45,718.30-19,691.89

Finding the Fourth Proportional to 33,120.70, 45,718.30 and 19,691.89

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Solution

The fourth proportional to 33,120.70, 45,718.30 and 19,691.89 is: 27,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.70 : 45,718.30 = 19,691.89 : x
  2. Step 2: Convert to fraction form
    33,120.70/45,718.30 = 19,691.89/x
  3. Step 3: Cross multiply
    33,120.70x = 45,718.30 × 19,691.89
  4. Step 4: Simplify right side
    33,120.70x = 900,279,734.59
  5. Step 5: Solve for x
    x = 900,279,734.59/33,120.70
  6. Step 6: Final answer
    x = 27,181.78

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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.