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Finding the Third Proportional to 12,824 and 27,640

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Solution

The third proportional to 12,824 and 27,640 is: 59,573.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824 : 27,640 = 27,640 : x
  2. Step 2: Convert to fraction form
    12,824/27,640 = 27,640/x
  3. Step 3: Cross multiply
    12,824x = 27,640 × 27,640
  4. Step 4: Simplify right side
    12,824x = 763,969,600
  5. Step 5: Solve for x
    x = 763,969,600/12,824
  6. Step 6: Final answer
    x = 59,573.42

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.