Home / 33,330.97-45,974.19-21,408.78

Finding the Fourth Proportional to 33,330.97, 45,974.19 and 21,408.78

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Solution

The fourth proportional to 33,330.97, 45,974.19 and 21,408.78 is: 29,529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,330.97 : 45,974.19 = 21,408.78 : x
  2. Step 2: Convert to fraction form
    33,330.97/45,974.19 = 21,408.78/x
  3. Step 3: Cross multiply
    33,330.97x = 45,974.19 × 21,408.78
  4. Step 4: Simplify right side
    33,330.97x = 984,251,319.39
  5. Step 5: Solve for x
    x = 984,251,319.39/33,330.97
  6. Step 6: Final answer
    x = 29,529.63

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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.