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Finding the Third Proportional to 17,289 and 28,579.50

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Solution

The third proportional to 17,289 and 28,579.50 is: 47,243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,289 : 28,579.50 = 28,579.50 : x
  2. Step 2: Convert to fraction form
    17,289/28,579.50 = 28,579.50/x
  3. Step 3: Cross multiply
    17,289x = 28,579.50 × 28,579.50
  4. Step 4: Simplify right side
    17,289x = 816,787,820.25
  5. Step 5: Solve for x
    x = 816,787,820.25/17,289
  6. Step 6: Final answer
    x = 47,243.21

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.