Home / 12,213.53-18,319.27-3,893.21

Finding the Fourth Proportional to 12,213.53, 18,319.27 and 3,893.21

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Solution

The fourth proportional to 12,213.53, 18,319.27 and 3,893.21 is: 5,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.53 : 18,319.27 = 3,893.21 : x
  2. Step 2: Convert to fraction form
    12,213.53/18,319.27 = 3,893.21/x
  3. Step 3: Cross multiply
    12,213.53x = 18,319.27 × 3,893.21
  4. Step 4: Simplify right side
    12,213.53x = 71,320,765.16
  5. Step 5: Solve for x
    x = 71,320,765.16/12,213.53
  6. Step 6: Final answer
    x = 5,839.49

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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.