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Finding the Third Proportional to 12,389 and 26,722

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Solution

The third proportional to 12,389 and 26,722 is: 57,637.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389 : 26,722 = 26,722 : x
  2. Step 2: Convert to fraction form
    12,389/26,722 = 26,722/x
  3. Step 3: Cross multiply
    12,389x = 26,722 × 26,722
  4. Step 4: Simplify right side
    12,389x = 714,065,284
  5. Step 5: Solve for x
    x = 714,065,284/12,389
  6. Step 6: Final answer
    x = 57,637.04

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.