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Finding the Third Proportional to 8,412 and 19,904

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Solution

The third proportional to 8,412 and 19,904 is: 47,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412 : 19,904 = 19,904 : x
  2. Step 2: Convert to fraction form
    8,412/19,904 = 19,904/x
  3. Step 3: Cross multiply
    8,412x = 19,904 × 19,904
  4. Step 4: Simplify right side
    8,412x = 396,169,216
  5. Step 5: Solve for x
    x = 396,169,216/8,412
  6. Step 6: Final answer
    x = 47,095.72

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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.