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Finding the Third Proportional to 11,999.25 and 18,678.38

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Solution

The third proportional to 11,999.25 and 18,678.38 is: 29,075.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.25 : 18,678.38 = 18,678.38 : x
  2. Step 2: Convert to fraction form
    11,999.25/18,678.38 = 18,678.38/x
  3. Step 3: Cross multiply
    11,999.25x = 18,678.38 × 18,678.38
  4. Step 4: Simplify right side
    11,999.25x = 348,881,692.64
  5. Step 5: Solve for x
    x = 348,881,692.64/11,999.25
  6. Step 6: Final answer
    x = 29,075.29

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.