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Finding the Third Proportional to 21,259 and 28,573

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Solution

The third proportional to 21,259 and 28,573 is: 38,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259 : 28,573 = 28,573 : x
  2. Step 2: Convert to fraction form
    21,259/28,573 = 28,573/x
  3. Step 3: Cross multiply
    21,259x = 28,573 × 28,573
  4. Step 4: Simplify right side
    21,259x = 816,416,329
  5. Step 5: Solve for x
    x = 816,416,329/21,259
  6. Step 6: Final answer
    x = 38,403.33

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.