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Finding the Third Proportional to 12,215,772 and 18,897,561

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Solution

The third proportional to 12,215,772 and 18,897,561 is: 29,234,158.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215,772 : 18,897,561 = 18,897,561 : x
  2. Step 2: Convert to fraction form
    12,215,772/18,897,561 = 18,897,561/x
  3. Step 3: Cross multiply
    12,215,772x = 18,897,561 × 18,897,561
  4. Step 4: Simplify right side
    12,215,772x = 357,117,811,748,721
  5. Step 5: Solve for x
    x = 357,117,811,748,721/12,215,772
  6. Step 6: Final answer
    x = 29,234,158.25

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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.