Home / 12,121.46-18,181.37-3,236.12

Finding the Fourth Proportional to 12,121.46, 18,181.37 and 3,236.12

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Solution

The fourth proportional to 12,121.46, 18,181.37 and 3,236.12 is: 4,853.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.46 : 18,181.37 = 3,236.12 : x
  2. Step 2: Convert to fraction form
    12,121.46/18,181.37 = 3,236.12/x
  3. Step 3: Cross multiply
    12,121.46x = 18,181.37 × 3,236.12
  4. Step 4: Simplify right side
    12,121.46x = 58,837,095.08
  5. Step 5: Solve for x
    x = 58,837,095.08/12,121.46
  6. Step 6: Final answer
    x = 4,853.96

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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.