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Finding the Fourth Proportional to 18,617.45, 27,917.41 and 6,762.87

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Solution

The fourth proportional to 18,617.45, 27,917.41 and 6,762.87 is: 10,141.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.45 : 27,917.41 = 6,762.87 : x
  2. Step 2: Convert to fraction form
    18,617.45/27,917.41 = 6,762.87/x
  3. Step 3: Cross multiply
    18,617.45x = 27,917.41 × 6,762.87
  4. Step 4: Simplify right side
    18,617.45x = 188,801,797.66
  5. Step 5: Solve for x
    x = 188,801,797.66/18,617.45
  6. Step 6: Final answer
    x = 10,141.12

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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.