Home / 12,212.46-18,319.23-5,185.44

Finding the Fourth Proportional to 12,212.46, 18,319.23 and 5,185.44

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Solution

The fourth proportional to 12,212.46, 18,319.23 and 5,185.44 is: 7,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.46 : 18,319.23 = 5,185.44 : x
  2. Step 2: Convert to fraction form
    12,212.46/18,319.23 = 5,185.44/x
  3. Step 3: Cross multiply
    12,212.46x = 18,319.23 × 5,185.44
  4. Step 4: Simplify right side
    12,212.46x = 94,993,268.01
  5. Step 5: Solve for x
    x = 94,993,268.01/12,212.46
  6. Step 6: Final answer
    x = 7,778.39

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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.