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Finding the Third Proportional to 21,935 and 29,787

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Solution

The third proportional to 21,935 and 29,787 is: 40,449.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935 : 29,787 = 29,787 : x
  2. Step 2: Convert to fraction form
    21,935/29,787 = 29,787/x
  3. Step 3: Cross multiply
    21,935x = 29,787 × 29,787
  4. Step 4: Simplify right side
    21,935x = 887,265,369
  5. Step 5: Solve for x
    x = 887,265,369/21,935
  6. Step 6: Final answer
    x = 40,449.75

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.