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Finding the Third Proportional to 15,917.45 and 21,675.41

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Solution

The third proportional to 15,917.45 and 21,675.41 is: 29,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.45 : 21,675.41 = 21,675.41 : x
  2. Step 2: Convert to fraction form
    15,917.45/21,675.41 = 21,675.41/x
  3. Step 3: Cross multiply
    15,917.45x = 21,675.41 × 21,675.41
  4. Step 4: Simplify right side
    15,917.45x = 469,823,405.44
  5. Step 5: Solve for x
    x = 469,823,405.44/15,917.45
  6. Step 6: Final answer
    x = 29,516.25

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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.