Home / 20,136.89-27,789.84-11,184.44

Finding the Fourth Proportional to 20,136.89, 27,789.84 and 11,184.44

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Solution

The fourth proportional to 20,136.89, 27,789.84 and 11,184.44 is: 15,435.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.89 : 27,789.84 = 11,184.44 : x
  2. Step 2: Convert to fraction form
    20,136.89/27,789.84 = 11,184.44/x
  3. Step 3: Cross multiply
    20,136.89x = 27,789.84 × 11,184.44
  4. Step 4: Simplify right side
    20,136.89x = 310,813,659.14
  5. Step 5: Solve for x
    x = 310,813,659.14/20,136.89
  6. Step 6: Final answer
    x = 15,435.04

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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.