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Finding the Third Proportional to 13,818 and 16,818

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Solution

The third proportional to 13,818 and 16,818 is: 20,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818 : 16,818 = 16,818 : x
  2. Step 2: Convert to fraction form
    13,818/16,818 = 16,818/x
  3. Step 3: Cross multiply
    13,818x = 16,818 × 16,818
  4. Step 4: Simplify right side
    13,818x = 282,845,124
  5. Step 5: Solve for x
    x = 282,845,124/13,818
  6. Step 6: Final answer
    x = 20,469.32

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.