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Finding the Third Proportional to 8,200 and 12,623

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Solution

The third proportional to 8,200 and 12,623 is: 19,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200 : 12,623 = 12,623 : x
  2. Step 2: Convert to fraction form
    8,200/12,623 = 12,623/x
  3. Step 3: Cross multiply
    8,200x = 12,623 × 12,623
  4. Step 4: Simplify right side
    8,200x = 159,340,129
  5. Step 5: Solve for x
    x = 159,340,129/8,200
  6. Step 6: Final answer
    x = 19,431.72

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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.