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Finding the Third Proportional to 21,438 and 46,926

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Solution

The third proportional to 21,438 and 46,926 is: 102,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438 : 46,926 = 46,926 : x
  2. Step 2: Convert to fraction form
    21,438/46,926 = 46,926/x
  3. Step 3: Cross multiply
    21,438x = 46,926 × 46,926
  4. Step 4: Simplify right side
    21,438x = 2,202,049,476
  5. Step 5: Solve for x
    x = 2,202,049,476/21,438
  6. Step 6: Final answer
    x = 102,717.11

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.