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Finding the Third Proportional to 8,129,978 and 11,889,638

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Solution

The third proportional to 8,129,978 and 11,889,638 is: 17,387,930.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129,978 : 11,889,638 = 11,889,638 : x
  2. Step 2: Convert to fraction form
    8,129,978/11,889,638 = 11,889,638/x
  3. Step 3: Cross multiply
    8,129,978x = 11,889,638 × 11,889,638
  4. Step 4: Simplify right side
    8,129,978x = 141,363,491,771,044
  5. Step 5: Solve for x
    x = 141,363,491,771,044/8,129,978
  6. Step 6: Final answer
    x = 17,387,930.42

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.