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Finding the Third Proportional to 6,220 and 13,409

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Solution

The third proportional to 6,220 and 13,409 is: 28,906.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,220 : 13,409 = 13,409 : x
  2. Step 2: Convert to fraction form
    6,220/13,409 = 13,409/x
  3. Step 3: Cross multiply
    6,220x = 13,409 × 13,409
  4. Step 4: Simplify right side
    6,220x = 179,801,281
  5. Step 5: Solve for x
    x = 179,801,281/6,220
  6. Step 6: Final answer
    x = 28,906.96

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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.