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Finding the Third Proportional to 15,920 and 19,256

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Solution

The third proportional to 15,920 and 19,256 is: 23,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920 : 19,256 = 19,256 : x
  2. Step 2: Convert to fraction form
    15,920/19,256 = 19,256/x
  3. Step 3: Cross multiply
    15,920x = 19,256 × 19,256
  4. Step 4: Simplify right side
    15,920x = 370,793,536
  5. Step 5: Solve for x
    x = 370,793,536/15,920
  6. Step 6: Final answer
    x = 23,291.05

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.