Home / 12,286.92-18,430.94-3,523.08

Finding the Fourth Proportional to 12,286.92, 18,430.94 and 3,523.08

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Solution

The fourth proportional to 12,286.92, 18,430.94 and 3,523.08 is: 5,284.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.92 : 18,430.94 = 3,523.08 : x
  2. Step 2: Convert to fraction form
    12,286.92/18,430.94 = 3,523.08/x
  3. Step 3: Cross multiply
    12,286.92x = 18,430.94 × 3,523.08
  4. Step 4: Simplify right side
    12,286.92x = 64,933,676.10
  5. Step 5: Solve for x
    x = 64,933,676.10/12,286.92
  6. Step 6: Final answer
    x = 5,284.78

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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.