Home / 21,187.88-29,239.25-11,627.82

Finding the Fourth Proportional to 21,187.88, 29,239.25 and 11,627.82

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Solution

The fourth proportional to 21,187.88, 29,239.25 and 11,627.82 is: 16,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.88 : 29,239.25 = 11,627.82 : x
  2. Step 2: Convert to fraction form
    21,187.88/29,239.25 = 11,627.82/x
  3. Step 3: Cross multiply
    21,187.88x = 29,239.25 × 11,627.82
  4. Step 4: Simplify right side
    21,187.88x = 339,988,677.80
  5. Step 5: Solve for x
    x = 339,988,677.80/21,187.88
  6. Step 6: Final answer
    x = 16,046.38

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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.