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Finding the Third Proportional to 8,215,739 and 12,771,638

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Solution

The third proportional to 8,215,739 and 12,771,638 is: 19,853,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215,739 : 12,771,638 = 12,771,638 : x
  2. Step 2: Convert to fraction form
    8,215,739/12,771,638 = 12,771,638/x
  3. Step 3: Cross multiply
    8,215,739x = 12,771,638 × 12,771,638
  4. Step 4: Simplify right side
    8,215,739x = 163,114,737,203,044
  5. Step 5: Solve for x
    x = 163,114,737,203,044/8,215,739
  6. Step 6: Final answer
    x = 19,853,933.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.