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Finding the Fourth Proportional to 33,138.92, 45,731.22 and 19,716.68

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Solution

The fourth proportional to 33,138.92, 45,731.22 and 19,716.68 is: 27,208.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,138.92 : 45,731.22 = 19,716.68 : x
  2. Step 2: Convert to fraction form
    33,138.92/45,731.22 = 19,716.68/x
  3. Step 3: Cross multiply
    33,138.92x = 45,731.22 × 19,716.68
  4. Step 4: Simplify right side
    33,138.92x = 901,667,830.75
  5. Step 5: Solve for x
    x = 901,667,830.75/33,138.92
  6. Step 6: Final answer
    x = 27,208.73

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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.