Home / 13,183.24-18,198.12-8,647.65

Finding the Fourth Proportional to 13,183.24, 18,198.12 and 8,647.65

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Solution

The fourth proportional to 13,183.24, 18,198.12 and 8,647.65 is: 11,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.24 : 18,198.12 = 8,647.65 : x
  2. Step 2: Convert to fraction form
    13,183.24/18,198.12 = 8,647.65/x
  3. Step 3: Cross multiply
    13,183.24x = 18,198.12 × 8,647.65
  4. Step 4: Simplify right side
    13,183.24x = 157,370,881.43
  5. Step 5: Solve for x
    x = 157,370,881.43/13,183.24
  6. Step 6: Final answer
    x = 11,937.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.