Home / 21,367.98-29,489.18-11,936.57

Finding the Fourth Proportional to 21,367.98, 29,489.18 and 11,936.57

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Solution

The fourth proportional to 21,367.98, 29,489.18 and 11,936.57 is: 16,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.98 : 29,489.18 = 11,936.57 : x
  2. Step 2: Convert to fraction form
    21,367.98/29,489.18 = 11,936.57/x
  3. Step 3: Cross multiply
    21,367.98x = 29,489.18 × 11,936.57
  4. Step 4: Simplify right side
    21,367.98x = 351,999,454.18
  5. Step 5: Solve for x
    x = 351,999,454.18/21,367.98
  6. Step 6: Final answer
    x = 16,473.22

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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.