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Finding the Fourth Proportional to 33,679.80, 50,519.70 and 21,213.90

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Solution

The fourth proportional to 33,679.80, 50,519.70 and 21,213.90 is: 31,820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,679.80 : 50,519.70 = 21,213.90 : x
  2. Step 2: Convert to fraction form
    33,679.80/50,519.70 = 21,213.90/x
  3. Step 3: Cross multiply
    33,679.80x = 50,519.70 × 21,213.90
  4. Step 4: Simplify right side
    33,679.80x = 1,071,719,863.83
  5. Step 5: Solve for x
    x = 1,071,719,863.83/33,679.80
  6. Step 6: Final answer
    x = 31,820.85

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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.