Home / 21,517.62-29,694.70-11,958.38

Finding the Fourth Proportional to 21,517.62, 29,694.70 and 11,958.38

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Solution

The fourth proportional to 21,517.62, 29,694.70 and 11,958.38 is: 16,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.62 : 29,694.70 = 11,958.38 : x
  2. Step 2: Convert to fraction form
    21,517.62/29,694.70 = 11,958.38/x
  3. Step 3: Cross multiply
    21,517.62x = 29,694.70 × 11,958.38
  4. Step 4: Simplify right side
    21,517.62x = 355,100,506.59
  5. Step 5: Solve for x
    x = 355,100,506.59/21,517.62
  6. Step 6: Final answer
    x = 16,502.78

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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.