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Finding the Fourth Proportional to 18,617.85, 27,910.17 and 6,923.07

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Solution

The fourth proportional to 18,617.85, 27,910.17 and 6,923.07 is: 10,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.85 : 27,910.17 = 6,923.07 : x
  2. Step 2: Convert to fraction form
    18,617.85/27,910.17 = 6,923.07/x
  3. Step 3: Cross multiply
    18,617.85x = 27,910.17 × 6,923.07
  4. Step 4: Simplify right side
    18,617.85x = 193,224,060.62
  5. Step 5: Solve for x
    x = 193,224,060.62/18,617.85
  6. Step 6: Final answer
    x = 10,378.43

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1.5x scale

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.