Home / 21,626.40-29,839.82-13,132.98

Finding the Fourth Proportional to 21,626.40, 29,839.82 and 13,132.98

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Solution

The fourth proportional to 21,626.40, 29,839.82 and 13,132.98 is: 18,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.40 : 29,839.82 = 13,132.98 : x
  2. Step 2: Convert to fraction form
    21,626.40/29,839.82 = 13,132.98/x
  3. Step 3: Cross multiply
    21,626.40x = 29,839.82 × 13,132.98
  4. Step 4: Simplify right side
    21,626.40x = 391,885,759.26
  5. Step 5: Solve for x
    x = 391,885,759.26/21,626.40
  6. Step 6: Final answer
    x = 18,120.71

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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.