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Finding the Third Proportional to 12,075.75 and 19,986.75

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Solution

The third proportional to 12,075.75 and 19,986.75 is: 33,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,075.75 : 19,986.75 = 19,986.75 : x
  2. Step 2: Convert to fraction form
    12,075.75/19,986.75 = 19,986.75/x
  3. Step 3: Cross multiply
    12,075.75x = 19,986.75 × 19,986.75
  4. Step 4: Simplify right side
    12,075.75x = 399,470,175.56
  5. Step 5: Solve for x
    x = 399,470,175.56/12,075.75
  6. Step 6: Final answer
    x = 33,080.36

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.