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Finding the Fourth Proportional to 12,183.15, 18,015.51 and 12,183.15

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Solution

The fourth proportional to 12,183.15, 18,015.51 and 12,183.15 is: 18,015.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.15 : 18,015.51 = 12,183.15 : x
  2. Step 2: Convert to fraction form
    12,183.15/18,015.51 = 12,183.15/x
  3. Step 3: Cross multiply
    12,183.15x = 18,015.51 × 12,183.15
  4. Step 4: Simplify right side
    12,183.15x = 219,485,660.66
  5. Step 5: Solve for x
    x = 219,485,660.66/12,183.15
  6. Step 6: Final answer
    x = 18,015.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.