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Finding the Third Proportional to 12,997,624.50 and 20,115,621

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Solution

The third proportional to 12,997,624.50 and 20,115,621 is: 31,131,704.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997,624.50 : 20,115,621 = 20,115,621 : x
  2. Step 2: Convert to fraction form
    12,997,624.50/20,115,621 = 20,115,621/x
  3. Step 3: Cross multiply
    12,997,624.50x = 20,115,621 × 20,115,621
  4. Step 4: Simplify right side
    12,997,624.50x = 404,638,208,215,641
  5. Step 5: Solve for x
    x = 404,638,208,215,641/12,997,624.50
  6. Step 6: Final answer
    x = 31,131,704.74

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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.