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Finding the Third Proportional to 12,979,712 and 20,177,548

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Solution

The third proportional to 12,979,712 and 20,177,548 is: 31,366,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,712 : 20,177,548 = 20,177,548 : x
  2. Step 2: Convert to fraction form
    12,979,712/20,177,548 = 20,177,548/x
  3. Step 3: Cross multiply
    12,979,712x = 20,177,548 × 20,177,548
  4. Step 4: Simplify right side
    12,979,712x = 407,133,443,292,304
  5. Step 5: Solve for x
    x = 407,133,443,292,304/12,979,712
  6. Step 6: Final answer
    x = 31,366,908.86

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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.