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Finding the Third Proportional to 12,997,986.75 and 18,171,074.25

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Solution

The third proportional to 12,997,986.75 and 18,171,074.25 is: 25,403,006.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997,986.75 : 18,171,074.25 = 18,171,074.25 : x
  2. Step 2: Convert to fraction form
    12,997,986.75/18,171,074.25 = 18,171,074.25/x
  3. Step 3: Cross multiply
    12,997,986.75x = 18,171,074.25 × 18,171,074.25
  4. Step 4: Simplify right side
    12,997,986.75x = 330,187,939,399,013.06
  5. Step 5: Solve for x
    x = 330,187,939,399,013.06/12,997,986.75
  6. Step 6: Final answer
    x = 25,403,006.31

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.