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Finding the Third Proportional to 15,444 and 20,976.75

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Solution

The third proportional to 15,444 and 20,976.75 is: 28,491.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444 : 20,976.75 = 20,976.75 : x
  2. Step 2: Convert to fraction form
    15,444/20,976.75 = 20,976.75/x
  3. Step 3: Cross multiply
    15,444x = 20,976.75 × 20,976.75
  4. Step 4: Simplify right side
    15,444x = 440,024,040.56
  5. Step 5: Solve for x
    x = 440,024,040.56/15,444
  6. Step 6: Final answer
    x = 28,491.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.