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Finding the Third Proportional to 8,521 and 13,051

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Solution

The third proportional to 8,521 and 13,051 is: 19,989.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521 : 13,051 = 13,051 : x
  2. Step 2: Convert to fraction form
    8,521/13,051 = 13,051/x
  3. Step 3: Cross multiply
    8,521x = 13,051 × 13,051
  4. Step 4: Simplify right side
    8,521x = 170,328,601
  5. Step 5: Solve for x
    x = 170,328,601/8,521
  6. Step 6: Final answer
    x = 19,989.27

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.