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Finding the Third Proportional to 19,226 and 31,389

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Solution

The third proportional to 19,226 and 31,389 is: 51,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,226 : 31,389 = 31,389 : x
  2. Step 2: Convert to fraction form
    19,226/31,389 = 31,389/x
  3. Step 3: Cross multiply
    19,226x = 31,389 × 31,389
  4. Step 4: Simplify right side
    19,226x = 985,269,321
  5. Step 5: Solve for x
    x = 985,269,321/19,226
  6. Step 6: Final answer
    x = 51,246.71

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.