Home / 13,645.83-20,468.74-4,286.60

Finding the Fourth Proportional to 13,645.83, 20,468.74 and 4,286.60

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Solution

The fourth proportional to 13,645.83, 20,468.74 and 4,286.60 is: 6,429.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.83 : 20,468.74 = 4,286.60 : x
  2. Step 2: Convert to fraction form
    13,645.83/20,468.74 = 4,286.60/x
  3. Step 3: Cross multiply
    13,645.83x = 20,468.74 × 4,286.60
  4. Step 4: Simplify right side
    13,645.83x = 87,741,300.88
  5. Step 5: Solve for x
    x = 87,741,300.88/13,645.83
  6. Step 6: Final answer
    x = 6,429.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.