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Finding the Third Proportional to 12,979,707 and 20,177,541

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Solution

The third proportional to 12,979,707 and 20,177,541 is: 31,366,899.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,707 : 20,177,541 = 20,177,541 : x
  2. Step 2: Convert to fraction form
    12,979,707/20,177,541 = 20,177,541/x
  3. Step 3: Cross multiply
    12,979,707x = 20,177,541 × 20,177,541
  4. Step 4: Simplify right side
    12,979,707x = 407,133,160,806,681
  5. Step 5: Solve for x
    x = 407,133,160,806,681/12,979,707
  6. Step 6: Final answer
    x = 31,366,899.18

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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.