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Finding the Fourth Proportional to 18,065.65, 27,091.74 and 6,216.12

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Solution

The fourth proportional to 18,065.65, 27,091.74 and 6,216.12 is: 9,321.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.65 : 27,091.74 = 6,216.12 : x
  2. Step 2: Convert to fraction form
    18,065.65/27,091.74 = 6,216.12/x
  3. Step 3: Cross multiply
    18,065.65x = 27,091.74 × 6,216.12
  4. Step 4: Simplify right side
    18,065.65x = 168,405,371.39
  5. Step 5: Solve for x
    x = 168,405,371.39/18,065.65
  6. Step 6: Final answer
    x = 9,321.86

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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.