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Finding the Fourth Proportional to 19,163.16, 28,735 and 8,766

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Solution

The fourth proportional to 19,163.16, 28,735 and 8,766 is: 13,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,163.16 : 28,735 = 8,766 : x
  2. Step 2: Convert to fraction form
    19,163.16/28,735 = 8,766/x
  3. Step 3: Cross multiply
    19,163.16x = 28,735 × 8,766
  4. Step 4: Simplify right side
    19,163.16x = 251,891,010
  5. Step 5: Solve for x
    x = 251,891,010/19,163.16
  6. Step 6: Final answer
    x = 13,144.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.