Home / 12,942.12-19,411.38-5,919.96

Finding the Fourth Proportional to 12,942.12, 19,411.38 and 5,919.96

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Solution

The fourth proportional to 12,942.12, 19,411.38 and 5,919.96 is: 8,879.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.12 : 19,411.38 = 5,919.96 : x
  2. Step 2: Convert to fraction form
    12,942.12/19,411.38 = 5,919.96/x
  3. Step 3: Cross multiply
    12,942.12x = 19,411.38 × 5,919.96
  4. Step 4: Simplify right side
    12,942.12x = 114,914,593.14
  5. Step 5: Solve for x
    x = 114,914,593.14/12,942.12
  6. Step 6: Final answer
    x = 8,879.12

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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.