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Finding the Third Proportional to 8,416 and 19,912

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Solution

The third proportional to 8,416 and 19,912 is: 47,111.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416 : 19,912 = 19,912 : x
  2. Step 2: Convert to fraction form
    8,416/19,912 = 19,912/x
  3. Step 3: Cross multiply
    8,416x = 19,912 × 19,912
  4. Step 4: Simplify right side
    8,416x = 396,487,744
  5. Step 5: Solve for x
    x = 396,487,744/8,416
  6. Step 6: Final answer
    x = 47,111.19

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1.5x scale

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.