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Finding the Third Proportional to 11,811,786 and 18,221,372

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Solution

The third proportional to 11,811,786 and 18,221,372 is: 28,109,076.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811,786 : 18,221,372 = 18,221,372 : x
  2. Step 2: Convert to fraction form
    11,811,786/18,221,372 = 18,221,372/x
  3. Step 3: Cross multiply
    11,811,786x = 18,221,372 × 18,221,372
  4. Step 4: Simplify right side
    11,811,786x = 332,018,397,562,384
  5. Step 5: Solve for x
    x = 332,018,397,562,384/11,811,786
  6. Step 6: Final answer
    x = 28,109,076.61

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.