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Finding the Fourth Proportional to 15,183.92, 20,953.22 and 8,469.84

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Solution

The fourth proportional to 15,183.92, 20,953.22 and 8,469.84 is: 11,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.92 : 20,953.22 = 8,469.84 : x
  2. Step 2: Convert to fraction form
    15,183.92/20,953.22 = 8,469.84/x
  3. Step 3: Cross multiply
    15,183.92x = 20,953.22 × 8,469.84
  4. Step 4: Simplify right side
    15,183.92x = 177,470,420.88
  5. Step 5: Solve for x
    x = 177,470,420.88/15,183.92
  6. Step 6: Final answer
    x = 11,688.05

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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.