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Finding the Third Proportional to 11,423 and 15,838

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Solution

The third proportional to 11,423 and 15,838 is: 21,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423 : 15,838 = 15,838 : x
  2. Step 2: Convert to fraction form
    11,423/15,838 = 15,838/x
  3. Step 3: Cross multiply
    11,423x = 15,838 × 15,838
  4. Step 4: Simplify right side
    11,423x = 250,842,244
  5. Step 5: Solve for x
    x = 250,842,244/11,423
  6. Step 6: Final answer
    x = 21,959.40

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.