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Finding the Third Proportional to 12,922,470 and 20,006,840

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Solution

The third proportional to 12,922,470 and 20,006,840 is: 30,975,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922,470 : 20,006,840 = 20,006,840 : x
  2. Step 2: Convert to fraction form
    12,922,470/20,006,840 = 20,006,840/x
  3. Step 3: Cross multiply
    12,922,470x = 20,006,840 × 20,006,840
  4. Step 4: Simplify right side
    12,922,470x = 400,273,646,785,600
  5. Step 5: Solve for x
    x = 400,273,646,785,600/12,922,470
  6. Step 6: Final answer
    x = 30,975,010.72

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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.