Home / 11,268.39-16,909.38-4,512.78

Finding the Fourth Proportional to 11,268.39, 16,909.38 and 4,512.78

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Solution

The fourth proportional to 11,268.39, 16,909.38 and 4,512.78 is: 6,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,268.39 : 16,909.38 = 4,512.78 : x
  2. Step 2: Convert to fraction form
    11,268.39/16,909.38 = 4,512.78/x
  3. Step 3: Cross multiply
    11,268.39x = 16,909.38 × 4,512.78
  4. Step 4: Simplify right side
    11,268.39x = 76,308,311.88
  5. Step 5: Solve for x
    x = 76,308,311.88/11,268.39
  6. Step 6: Final answer
    x = 6,771.89

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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.