Home / 11,920.68-17,879.04-4,127.64

Finding the Fourth Proportional to 11,920.68, 17,879.04 and 4,127.64

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Solution

The fourth proportional to 11,920.68, 17,879.04 and 4,127.64 is: 6,190.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.68 : 17,879.04 = 4,127.64 : x
  2. Step 2: Convert to fraction form
    11,920.68/17,879.04 = 4,127.64/x
  3. Step 3: Cross multiply
    11,920.68x = 17,879.04 × 4,127.64
  4. Step 4: Simplify right side
    11,920.68x = 73,798,240.67
  5. Step 5: Solve for x
    x = 73,798,240.67/11,920.68
  6. Step 6: Final answer
    x = 6,190.77

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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.