Home / 20,180.91-27,849.78-11,228.79

Finding the Fourth Proportional to 20,180.91, 27,849.78 and 11,228.79

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Solution

The fourth proportional to 20,180.91, 27,849.78 and 11,228.79 is: 15,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.91 : 27,849.78 = 11,228.79 : x
  2. Step 2: Convert to fraction form
    20,180.91/27,849.78 = 11,228.79/x
  3. Step 3: Cross multiply
    20,180.91x = 27,849.78 × 11,228.79
  4. Step 4: Simplify right side
    20,180.91x = 312,719,331.17
  5. Step 5: Solve for x
    x = 312,719,331.17/20,180.91
  6. Step 6: Final answer
    x = 15,495.80

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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.