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Finding the Third Proportional to 6,664 and 12,992

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Solution

The third proportional to 6,664 and 12,992 is: 25,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664 : 12,992 = 12,992 : x
  2. Step 2: Convert to fraction form
    6,664/12,992 = 12,992/x
  3. Step 3: Cross multiply
    6,664x = 12,992 × 12,992
  4. Step 4: Simplify right side
    6,664x = 168,792,064
  5. Step 5: Solve for x
    x = 168,792,064/6,664
  6. Step 6: Final answer
    x = 25,328.94

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.