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Finding the Third Proportional to 9,390 and 19,858

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Solution

The third proportional to 9,390 and 19,858 is: 41,995.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390 : 19,858 = 19,858 : x
  2. Step 2: Convert to fraction form
    9,390/19,858 = 19,858/x
  3. Step 3: Cross multiply
    9,390x = 19,858 × 19,858
  4. Step 4: Simplify right side
    9,390x = 394,340,164
  5. Step 5: Solve for x
    x = 394,340,164/9,390
  6. Step 6: Final answer
    x = 41,995.76

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.