Home / 20,136.40-27,789.48-11,184

Finding the Fourth Proportional to 20,136.40, 27,789.48 and 11,184

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Solution

The fourth proportional to 20,136.40, 27,789.48 and 11,184 is: 15,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.40 : 27,789.48 = 11,184 : x
  2. Step 2: Convert to fraction form
    20,136.40/27,789.48 = 11,184/x
  3. Step 3: Cross multiply
    20,136.40x = 27,789.48 × 11,184
  4. Step 4: Simplify right side
    20,136.40x = 310,797,544.32
  5. Step 5: Solve for x
    x = 310,797,544.32/20,136.40
  6. Step 6: Final answer
    x = 15,434.61

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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.