Home / 20,183.60-27,854.16-12,221.32

Finding the Fourth Proportional to 20,183.60, 27,854.16 and 12,221.32

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Solution

The fourth proportional to 20,183.60, 27,854.16 and 12,221.32 is: 16,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.60 : 27,854.16 = 12,221.32 : x
  2. Step 2: Convert to fraction form
    20,183.60/27,854.16 = 12,221.32/x
  3. Step 3: Cross multiply
    20,183.60x = 27,854.16 × 12,221.32
  4. Step 4: Simplify right side
    20,183.60x = 340,414,602.69
  5. Step 5: Solve for x
    x = 340,414,602.69/20,183.60
  6. Step 6: Final answer
    x = 16,865.90

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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.