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Finding the Third Proportional to 8,143 and 12,943

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Solution

The third proportional to 8,143 and 12,943 is: 20,572.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143 : 12,943 = 12,943 : x
  2. Step 2: Convert to fraction form
    8,143/12,943 = 12,943/x
  3. Step 3: Cross multiply
    8,143x = 12,943 × 12,943
  4. Step 4: Simplify right side
    8,143x = 167,521,249
  5. Step 5: Solve for x
    x = 167,521,249/8,143
  6. Step 6: Final answer
    x = 20,572.42

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.