Home / 11,920.62-17,879.16-3,156.14

Finding the Fourth Proportional to 11,920.62, 17,879.16 and 3,156.14

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Solution

The fourth proportional to 11,920.62, 17,879.16 and 3,156.14 is: 4,733.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.62 : 17,879.16 = 3,156.14 : x
  2. Step 2: Convert to fraction form
    11,920.62/17,879.16 = 3,156.14/x
  3. Step 3: Cross multiply
    11,920.62x = 17,879.16 × 3,156.14
  4. Step 4: Simplify right side
    11,920.62x = 56,429,132.04
  5. Step 5: Solve for x
    x = 56,429,132.04/11,920.62
  6. Step 6: Final answer
    x = 4,733.74

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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.