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Finding the Third Proportional to 9,555 and 20,130

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Solution

The third proportional to 9,555 and 20,130 is: 42,408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,555 : 20,130 = 20,130 : x
  2. Step 2: Convert to fraction form
    9,555/20,130 = 20,130/x
  3. Step 3: Cross multiply
    9,555x = 20,130 × 20,130
  4. Step 4: Simplify right side
    9,555x = 405,216,900
  5. Step 5: Solve for x
    x = 405,216,900/9,555
  6. Step 6: Final answer
    x = 42,408.89

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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.