Home / 20,180.76-27,850.49-11,228.45

Finding the Fourth Proportional to 20,180.76, 27,850.49 and 11,228.45

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Solution

The fourth proportional to 20,180.76, 27,850.49 and 11,228.45 is: 15,495.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.76 : 27,850.49 = 11,228.45 : x
  2. Step 2: Convert to fraction form
    20,180.76/27,850.49 = 11,228.45/x
  3. Step 3: Cross multiply
    20,180.76x = 27,850.49 × 11,228.45
  4. Step 4: Simplify right side
    20,180.76x = 312,717,639.05
  5. Step 5: Solve for x
    x = 312,717,639.05/20,180.76
  6. Step 6: Final answer
    x = 15,495.83

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Double scale
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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.