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Finding the Third Proportional to 8,396 and 19,886

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Solution

The third proportional to 8,396 and 19,886 is: 47,100.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,396 : 19,886 = 19,886 : x
  2. Step 2: Convert to fraction form
    8,396/19,886 = 19,886/x
  3. Step 3: Cross multiply
    8,396x = 19,886 × 19,886
  4. Step 4: Simplify right side
    8,396x = 395,452,996
  5. Step 5: Solve for x
    x = 395,452,996/8,396
  6. Step 6: Final answer
    x = 47,100.17

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.