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Finding the Third Proportional to 15,985 and 25,075

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Solution

The third proportional to 15,985 and 25,075 is: 39,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985 : 25,075 = 25,075 : x
  2. Step 2: Convert to fraction form
    15,985/25,075 = 25,075/x
  3. Step 3: Cross multiply
    15,985x = 25,075 × 25,075
  4. Step 4: Simplify right side
    15,985x = 628,755,625
  5. Step 5: Solve for x
    x = 628,755,625/15,985
  6. Step 6: Final answer
    x = 39,334.10

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.