Home / 20,786.54-31,179.80-7,633.22

Finding the Fourth Proportional to 20,786.54, 31,179.80 and 7,633.22

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Solution

The fourth proportional to 20,786.54, 31,179.80 and 7,633.22 is: 11,449.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.54 : 31,179.80 = 7,633.22 : x
  2. Step 2: Convert to fraction form
    20,786.54/31,179.80 = 7,633.22/x
  3. Step 3: Cross multiply
    20,786.54x = 31,179.80 × 7,633.22
  4. Step 4: Simplify right side
    20,786.54x = 238,002,136.14
  5. Step 5: Solve for x
    x = 238,002,136.14/20,786.54
  6. Step 6: Final answer
    x = 11,449.82

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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.