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Finding the Third Proportional to 8,916 and 19,530

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Solution

The third proportional to 8,916 and 19,530 is: 42,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916 : 19,530 = 19,530 : x
  2. Step 2: Convert to fraction form
    8,916/19,530 = 19,530/x
  3. Step 3: Cross multiply
    8,916x = 19,530 × 19,530
  4. Step 4: Simplify right side
    8,916x = 381,420,900
  5. Step 5: Solve for x
    x = 381,420,900/8,916
  6. Step 6: Final answer
    x = 42,779.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.