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Finding the Fourth Proportional to 18,311.94, 27,443.61 and 6,613.92

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Solution

The fourth proportional to 18,311.94, 27,443.61 and 6,613.92 is: 9,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.94 : 27,443.61 = 6,613.92 : x
  2. Step 2: Convert to fraction form
    18,311.94/27,443.61 = 6,613.92/x
  3. Step 3: Cross multiply
    18,311.94x = 27,443.61 × 6,613.92
  4. Step 4: Simplify right side
    18,311.94x = 181,509,841.05
  5. Step 5: Solve for x
    x = 181,509,841.05/18,311.94
  6. Step 6: Final answer
    x = 9,912.10

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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.