Home / 18,183.92-25,086.64-13,415.28

Finding the Fourth Proportional to 18,183.92, 25,086.64 and 13,415.28

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Solution

The fourth proportional to 18,183.92, 25,086.64 and 13,415.28 is: 18,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,183.92 : 25,086.64 = 13,415.28 : x
  2. Step 2: Convert to fraction form
    18,183.92/25,086.64 = 13,415.28/x
  3. Step 3: Cross multiply
    18,183.92x = 25,086.64 × 13,415.28
  4. Step 4: Simplify right side
    18,183.92x = 336,544,299.86
  5. Step 5: Solve for x
    x = 336,544,299.86/18,183.92
  6. Step 6: Final answer
    x = 18,507.80

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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.