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Finding the Fourth Proportional to 33,983.80, 50,963.56 and 12,918.22

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Solution

The fourth proportional to 33,983.80, 50,963.56 and 12,918.22 is: 19,372.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,983.80 : 50,963.56 = 12,918.22 : x
  2. Step 2: Convert to fraction form
    33,983.80/50,963.56 = 12,918.22/x
  3. Step 3: Cross multiply
    33,983.80x = 50,963.56 × 12,918.22
  4. Step 4: Simplify right side
    33,983.80x = 658,358,320.36
  5. Step 5: Solve for x
    x = 658,358,320.36/33,983.80
  6. Step 6: Final answer
    x = 19,372.71

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1.5x scale

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.