Home / 12,516.87-18,778.29-4,196.91

Finding the Fourth Proportional to 12,516.87, 18,778.29 and 4,196.91

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Solution

The fourth proportional to 12,516.87, 18,778.29 and 4,196.91 is: 6,296.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.87 : 18,778.29 = 4,196.91 : x
  2. Step 2: Convert to fraction form
    12,516.87/18,778.29 = 4,196.91/x
  3. Step 3: Cross multiply
    12,516.87x = 18,778.29 × 4,196.91
  4. Step 4: Simplify right side
    12,516.87x = 78,810,793.08
  5. Step 5: Solve for x
    x = 78,810,793.08/12,516.87
  6. Step 6: Final answer
    x = 6,296.37

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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.