Home / 20,099.26-27,738.64-11,149.65

Finding the Fourth Proportional to 20,099.26, 27,738.64 and 11,149.65

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Solution

The fourth proportional to 20,099.26, 27,738.64 and 11,149.65 is: 15,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.26 : 27,738.64 = 11,149.65 : x
  2. Step 2: Convert to fraction form
    20,099.26/27,738.64 = 11,149.65/x
  3. Step 3: Cross multiply
    20,099.26x = 27,738.64 × 11,149.65
  4. Step 4: Simplify right side
    20,099.26x = 309,276,141.41
  5. Step 5: Solve for x
    x = 309,276,141.41/20,099.26
  6. Step 6: Final answer
    x = 15,387.44

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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.