Home / 20,855.08-28,772.82-11,896.12

Finding the Fourth Proportional to 20,855.08, 28,772.82 and 11,896.12

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Solution

The fourth proportional to 20,855.08, 28,772.82 and 11,896.12 is: 16,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.08 : 28,772.82 = 11,896.12 : x
  2. Step 2: Convert to fraction form
    20,855.08/28,772.82 = 11,896.12/x
  3. Step 3: Cross multiply
    20,855.08x = 28,772.82 × 11,896.12
  4. Step 4: Simplify right side
    20,855.08x = 342,284,919.46
  5. Step 5: Solve for x
    x = 342,284,919.46/20,855.08
  6. Step 6: Final answer
    x = 16,412.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.