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Finding the Third Proportional to 13,456 and 20,702

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Solution

The third proportional to 13,456 and 20,702 is: 31,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456 : 20,702 = 20,702 : x
  2. Step 2: Convert to fraction form
    13,456/20,702 = 20,702/x
  3. Step 3: Cross multiply
    13,456x = 20,702 × 20,702
  4. Step 4: Simplify right side
    13,456x = 428,572,804
  5. Step 5: Solve for x
    x = 428,572,804/13,456
  6. Step 6: Final answer
    x = 31,849.94

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.