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Finding the Third Proportional to 21,348 and 43,896

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Solution

The third proportional to 21,348 and 43,896 is: 90,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348 : 43,896 = 43,896 : x
  2. Step 2: Convert to fraction form
    21,348/43,896 = 43,896/x
  3. Step 3: Cross multiply
    21,348x = 43,896 × 43,896
  4. Step 4: Simplify right side
    21,348x = 1,926,858,816
  5. Step 5: Solve for x
    x = 1,926,858,816/21,348
  6. Step 6: Final answer
    x = 90,259.45

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.