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Finding the Third Proportional to 15,769.50 and 21,132.75

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Solution

The third proportional to 15,769.50 and 21,132.75 is: 28,320.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.50 : 21,132.75 = 21,132.75 : x
  2. Step 2: Convert to fraction form
    15,769.50/21,132.75 = 21,132.75/x
  3. Step 3: Cross multiply
    15,769.50x = 21,132.75 × 21,132.75
  4. Step 4: Simplify right side
    15,769.50x = 446,593,122.56
  5. Step 5: Solve for x
    x = 446,593,122.56/15,769.50
  6. Step 6: Final answer
    x = 28,320.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.