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Finding the Third Proportional to 11,978,692.50 and 18,617,768.25

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Solution

The third proportional to 11,978,692.50 and 18,617,768.25 is: 28,936,488.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978,692.50 : 18,617,768.25 = 18,617,768.25 : x
  2. Step 2: Convert to fraction form
    11,978,692.50/18,617,768.25 = 18,617,768.25/x
  3. Step 3: Cross multiply
    11,978,692.50x = 18,617,768.25 × 18,617,768.25
  4. Step 4: Simplify right side
    11,978,692.50x = 346,621,294,610,708.06
  5. Step 5: Solve for x
    x = 346,621,294,610,708.06/11,978,692.50
  6. Step 6: Final answer
    x = 28,936,488.24

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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.