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Finding the Third Proportional to 11,785 and 25,643

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Solution

The third proportional to 11,785 and 25,643 is: 55,796.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785 : 25,643 = 25,643 : x
  2. Step 2: Convert to fraction form
    11,785/25,643 = 25,643/x
  3. Step 3: Cross multiply
    11,785x = 25,643 × 25,643
  4. Step 4: Simplify right side
    11,785x = 657,563,449
  5. Step 5: Solve for x
    x = 657,563,449/11,785
  6. Step 6: Final answer
    x = 55,796.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.