Home / 15,183.64-20,953.46-8,469.70

Finding the Fourth Proportional to 15,183.64, 20,953.46 and 8,469.70

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Solution

The fourth proportional to 15,183.64, 20,953.46 and 8,469.70 is: 11,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.64 : 20,953.46 = 8,469.70 : x
  2. Step 2: Convert to fraction form
    15,183.64/20,953.46 = 8,469.70/x
  3. Step 3: Cross multiply
    15,183.64x = 20,953.46 × 8,469.70
  4. Step 4: Simplify right side
    15,183.64x = 177,469,520.16
  5. Step 5: Solve for x
    x = 177,469,520.16/15,183.64
  6. Step 6: Final answer
    x = 11,688.21

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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.