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Finding the Third Proportional to 14,289 and 20,889

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Solution

The third proportional to 14,289 and 20,889 is: 30,537.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289 : 20,889 = 20,889 : x
  2. Step 2: Convert to fraction form
    14,289/20,889 = 20,889/x
  3. Step 3: Cross multiply
    14,289x = 20,889 × 20,889
  4. Step 4: Simplify right side
    14,289x = 436,350,321
  5. Step 5: Solve for x
    x = 436,350,321/14,289
  6. Step 6: Final answer
    x = 30,537.50

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.