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Finding the Third Proportional to 13,172.63 and 20,029.78

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Solution

The third proportional to 13,172.63 and 20,029.78 is: 30,456.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.63 : 20,029.78 = 20,029.78 : x
  2. Step 2: Convert to fraction form
    13,172.63/20,029.78 = 20,029.78/x
  3. Step 3: Cross multiply
    13,172.63x = 20,029.78 × 20,029.78
  4. Step 4: Simplify right side
    13,172.63x = 401,192,136.92
  5. Step 5: Solve for x
    x = 401,192,136.92/13,172.63
  6. Step 6: Final answer
    x = 30,456.51

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.