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Finding the Third Proportional to 12,975 and 20,070

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Solution

The third proportional to 12,975 and 20,070 is: 31,044.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975 : 20,070 = 20,070 : x
  2. Step 2: Convert to fraction form
    12,975/20,070 = 20,070/x
  3. Step 3: Cross multiply
    12,975x = 20,070 × 20,070
  4. Step 4: Simplify right side
    12,975x = 402,804,900
  5. Step 5: Solve for x
    x = 402,804,900/12,975
  6. Step 6: Final answer
    x = 31,044.69

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.