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Finding the Fourth Proportional to 21,627, 29,845.26 and 11,691

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Solution

The fourth proportional to 21,627, 29,845.26 and 11,691 is: 16,133.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627 : 29,845.26 = 11,691 : x
  2. Step 2: Convert to fraction form
    21,627/29,845.26 = 11,691/x
  3. Step 3: Cross multiply
    21,627x = 29,845.26 × 11,691
  4. Step 4: Simplify right side
    21,627x = 348,920,934.66
  5. Step 5: Solve for x
    x = 348,920,934.66/21,627
  6. Step 6: Final answer
    x = 16,133.58

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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.