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Finding the Fourth Proportional to 33,983.28, 50,978.16 and 12,910.32

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Solution

The fourth proportional to 33,983.28, 50,978.16 and 12,910.32 is: 19,366.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,983.28 : 50,978.16 = 12,910.32 : x
  2. Step 2: Convert to fraction form
    33,983.28/50,978.16 = 12,910.32/x
  3. Step 3: Cross multiply
    33,983.28x = 50,978.16 × 12,910.32
  4. Step 4: Simplify right side
    33,983.28x = 658,144,358.61
  5. Step 5: Solve for x
    x = 658,144,358.61/33,983.28
  6. Step 6: Final answer
    x = 19,366.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.