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Finding the Third Proportional to 8,891.25 and 13,721.63

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Solution

The third proportional to 8,891.25 and 13,721.63 is: 21,176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.25 : 13,721.63 = 13,721.63 : x
  2. Step 2: Convert to fraction form
    8,891.25/13,721.63 = 13,721.63/x
  3. Step 3: Cross multiply
    8,891.25x = 13,721.63 × 13,721.63
  4. Step 4: Simplify right side
    8,891.25x = 188,282,992.64
  5. Step 5: Solve for x
    x = 188,282,992.64/8,891.25
  6. Step 6: Final answer
    x = 21,176.21

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.