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Finding the Third Proportional to 21,195 and 29,091

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Solution

The third proportional to 21,195 and 29,091 is: 39,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195 : 29,091 = 29,091 : x
  2. Step 2: Convert to fraction form
    21,195/29,091 = 29,091/x
  3. Step 3: Cross multiply
    21,195x = 29,091 × 29,091
  4. Step 4: Simplify right side
    21,195x = 846,286,281
  5. Step 5: Solve for x
    x = 846,286,281/21,195
  6. Step 6: Final answer
    x = 39,928.58

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.