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Finding the Third Proportional to 13,821 and 29,824

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Solution

The third proportional to 13,821 and 29,824 is: 64,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821 : 29,824 = 29,824 : x
  2. Step 2: Convert to fraction form
    13,821/29,824 = 29,824/x
  3. Step 3: Cross multiply
    13,821x = 29,824 × 29,824
  4. Step 4: Simplify right side
    13,821x = 889,470,976
  5. Step 5: Solve for x
    x = 889,470,976/13,821
  6. Step 6: Final answer
    x = 64,356.48

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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.