Home / 21,318.97-29,419.45-11,759.23

Finding the Fourth Proportional to 21,318.97, 29,419.45 and 11,759.23

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Solution

The fourth proportional to 21,318.97, 29,419.45 and 11,759.23 is: 16,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.97 : 29,419.45 = 11,759.23 : x
  2. Step 2: Convert to fraction form
    21,318.97/29,419.45 = 11,759.23/x
  3. Step 3: Cross multiply
    21,318.97x = 29,419.45 × 11,759.23
  4. Step 4: Simplify right side
    21,318.97x = 345,950,020.23
  5. Step 5: Solve for x
    x = 345,950,020.23/21,318.97
  6. Step 6: Final answer
    x = 16,227.34

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Double scale
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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.