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Finding the Third Proportional to 12,979,713 and 20,177,550

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Solution

The third proportional to 12,979,713 and 20,177,550 is: 31,366,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,713 : 20,177,550 = 20,177,550 : x
  2. Step 2: Convert to fraction form
    12,979,713/20,177,550 = 20,177,550/x
  3. Step 3: Cross multiply
    12,979,713x = 20,177,550 × 20,177,550
  4. Step 4: Simplify right side
    12,979,713x = 407,133,524,002,500
  5. Step 5: Solve for x
    x = 407,133,524,002,500/12,979,713
  6. Step 6: Final answer
    x = 31,366,912.66

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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.