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Finding the Third Proportional to 15,649 and 21,313.50

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Solution

The third proportional to 15,649 and 21,313.50 is: 29,028.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,649 : 21,313.50 = 21,313.50 : x
  2. Step 2: Convert to fraction form
    15,649/21,313.50 = 21,313.50/x
  3. Step 3: Cross multiply
    15,649x = 21,313.50 × 21,313.50
  4. Step 4: Simplify right side
    15,649x = 454,265,282.25
  5. Step 5: Solve for x
    x = 454,265,282.25/15,649
  6. Step 6: Final answer
    x = 29,028.39

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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.