Home / 20,183.67-27,856.41-12,117.87

Finding the Fourth Proportional to 20,183.67, 27,856.41 and 12,117.87

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Solution

The fourth proportional to 20,183.67, 27,856.41 and 12,117.87 is: 16,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.67 : 27,856.41 = 12,117.87 : x
  2. Step 2: Convert to fraction form
    20,183.67/27,856.41 = 12,117.87/x
  3. Step 3: Cross multiply
    20,183.67x = 27,856.41 × 12,117.87
  4. Step 4: Simplify right side
    20,183.67x = 337,560,355.05
  5. Step 5: Solve for x
    x = 337,560,355.05/20,183.67
  6. Step 6: Final answer
    x = 16,724.43

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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.