Home / 12,121.16-18,168.68-5,867.96

Finding the Fourth Proportional to 12,121.16, 18,168.68 and 5,867.96

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Solution

The fourth proportional to 12,121.16, 18,168.68 and 5,867.96 is: 8,795.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.16 : 18,168.68 = 5,867.96 : x
  2. Step 2: Convert to fraction form
    12,121.16/18,168.68 = 5,867.96/x
  3. Step 3: Cross multiply
    12,121.16x = 18,168.68 × 5,867.96
  4. Step 4: Simplify right side
    12,121.16x = 106,613,087.49
  5. Step 5: Solve for x
    x = 106,613,087.49/12,121.16
  6. Step 6: Final answer
    x = 8,795.62

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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.