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Finding the Third Proportional to 12,846,945 and 18,915,555

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Solution

The third proportional to 12,846,945 and 18,915,555 is: 27,850,840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,846,945 : 18,915,555 = 18,915,555 : x
  2. Step 2: Convert to fraction form
    12,846,945/18,915,555 = 18,915,555/x
  3. Step 3: Cross multiply
    12,846,945x = 18,915,555 × 18,915,555
  4. Step 4: Simplify right side
    12,846,945x = 357,798,220,958,025
  5. Step 5: Solve for x
    x = 357,798,220,958,025/12,846,945
  6. Step 6: Final answer
    x = 27,850,840.88

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.