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Finding the Fourth Proportional to 18,134.75, 27,216.75 and 9,372.17

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Solution

The fourth proportional to 18,134.75, 27,216.75 and 9,372.17 is: 14,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,134.75 : 27,216.75 = 9,372.17 : x
  2. Step 2: Convert to fraction form
    18,134.75/27,216.75 = 9,372.17/x
  3. Step 3: Cross multiply
    18,134.75x = 27,216.75 × 9,372.17
  4. Step 4: Simplify right side
    18,134.75x = 255,080,007.85
  5. Step 5: Solve for x
    x = 255,080,007.85/18,134.75
  6. Step 6: Final answer
    x = 14,065.81

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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.