Home / 12,211.16-18,318.07-3,889.22

Finding the Fourth Proportional to 12,211.16, 18,318.07 and 3,889.22

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Solution

The fourth proportional to 12,211.16, 18,318.07 and 3,889.22 is: 5,834.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.16 : 18,318.07 = 3,889.22 : x
  2. Step 2: Convert to fraction form
    12,211.16/18,318.07 = 3,889.22/x
  3. Step 3: Cross multiply
    12,211.16x = 18,318.07 × 3,889.22
  4. Step 4: Simplify right side
    12,211.16x = 71,242,912.62
  5. Step 5: Solve for x
    x = 71,242,912.62/12,211.16
  6. Step 6: Final answer
    x = 5,834.25

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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.