Home / 12,213.16-18,321.07-3,891.22

Finding the Fourth Proportional to 12,213.16, 18,321.07 and 3,891.22

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Solution

The fourth proportional to 12,213.16, 18,321.07 and 3,891.22 is: 5,837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.16 : 18,321.07 = 3,891.22 : x
  2. Step 2: Convert to fraction form
    12,213.16/18,321.07 = 3,891.22/x
  3. Step 3: Cross multiply
    12,213.16x = 18,321.07 × 3,891.22
  4. Step 4: Simplify right side
    12,213.16x = 71,291,314.01
  5. Step 5: Solve for x
    x = 71,291,314.01/12,213.16
  6. Step 6: Final answer
    x = 5,837.25

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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.