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Finding the Third Proportional to 18,932 and 51,290

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Solution

The third proportional to 18,932 and 51,290 is: 138,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932 : 51,290 = 51,290 : x
  2. Step 2: Convert to fraction form
    18,932/51,290 = 51,290/x
  3. Step 3: Cross multiply
    18,932x = 51,290 × 51,290
  4. Step 4: Simplify right side
    18,932x = 2,630,664,100
  5. Step 5: Solve for x
    x = 2,630,664,100/18,932
  6. Step 6: Final answer
    x = 138,953.31

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.