Home / 12,516.49-18,778.79-4,197.25

Finding the Fourth Proportional to 12,516.49, 18,778.79 and 4,197.25

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Solution

The fourth proportional to 12,516.49, 18,778.79 and 4,197.25 is: 6,297.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.49 : 18,778.79 = 4,197.25 : x
  2. Step 2: Convert to fraction form
    12,516.49/18,778.79 = 4,197.25/x
  3. Step 3: Cross multiply
    12,516.49x = 18,778.79 × 4,197.25
  4. Step 4: Simplify right side
    12,516.49x = 78,819,286.68
  5. Step 5: Solve for x
    x = 78,819,286.68/12,516.49
  6. Step 6: Final answer
    x = 6,297.23

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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.