Home / 12,912.03-19,366.22-4,145.81

Finding the Fourth Proportional to 12,912.03, 19,366.22 and 4,145.81

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Solution

The fourth proportional to 12,912.03, 19,366.22 and 4,145.81 is: 6,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.03 : 19,366.22 = 4,145.81 : x
  2. Step 2: Convert to fraction form
    12,912.03/19,366.22 = 4,145.81/x
  3. Step 3: Cross multiply
    12,912.03x = 19,366.22 × 4,145.81
  4. Step 4: Simplify right side
    12,912.03x = 80,288,550.98
  5. Step 5: Solve for x
    x = 80,288,550.98/12,912.03
  6. Step 6: Final answer
    x = 6,218.12

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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.