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Finding the Third Proportional to 12,165,905 and 18,831,234

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Solution

The third proportional to 12,165,905 and 18,831,234 is: 29,148,293.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165,905 : 18,831,234 = 18,831,234 : x
  2. Step 2: Convert to fraction form
    12,165,905/18,831,234 = 18,831,234/x
  3. Step 3: Cross multiply
    12,165,905x = 18,831,234 × 18,831,234
  4. Step 4: Simplify right side
    12,165,905x = 354,615,373,962,756
  5. Step 5: Solve for x
    x = 354,615,373,962,756/12,165,905
  6. Step 6: Final answer
    x = 29,148,293.86

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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.