Home / 12,213.90-18,321.53-3,449.52

Finding the Fourth Proportional to 12,213.90, 18,321.53 and 3,449.52

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Solution

The fourth proportional to 12,213.90, 18,321.53 and 3,449.52 is: 5,174.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.90 : 18,321.53 = 3,449.52 : x
  2. Step 2: Convert to fraction form
    12,213.90/18,321.53 = 3,449.52/x
  3. Step 3: Cross multiply
    12,213.90x = 18,321.53 × 3,449.52
  4. Step 4: Simplify right side
    12,213.90x = 63,200,466.92
  5. Step 5: Solve for x
    x = 63,200,466.92/12,213.90
  6. Step 6: Final answer
    x = 5,174.47

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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.