Home / 15,183.21-20,955.38-9,218.85

Finding the Fourth Proportional to 15,183.21, 20,955.38 and 9,218.85

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Solution

The fourth proportional to 15,183.21, 20,955.38 and 9,218.85 is: 12,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.21 : 20,955.38 = 9,218.85 : x
  2. Step 2: Convert to fraction form
    15,183.21/20,955.38 = 9,218.85/x
  3. Step 3: Cross multiply
    15,183.21x = 20,955.38 × 9,218.85
  4. Step 4: Simplify right side
    15,183.21x = 193,184,458.82
  5. Step 5: Solve for x
    x = 193,184,458.82/15,183.21
  6. Step 6: Final answer
    x = 12,723.56

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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.