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Finding the Third Proportional to 15,039 and 21,191.25

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Solution

The third proportional to 15,039 and 21,191.25 is: 29,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039 : 21,191.25 = 21,191.25 : x
  2. Step 2: Convert to fraction form
    15,039/21,191.25 = 21,191.25/x
  3. Step 3: Cross multiply
    15,039x = 21,191.25 × 21,191.25
  4. Step 4: Simplify right side
    15,039x = 449,069,076.56
  5. Step 5: Solve for x
    x = 449,069,076.56/15,039
  6. Step 6: Final answer
    x = 29,860.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.