Home / 20,179.91-27,848.40-11,227.79

Finding the Fourth Proportional to 20,179.91, 27,848.40 and 11,227.79

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Solution

The fourth proportional to 20,179.91, 27,848.40 and 11,227.79 is: 15,494.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.91 : 27,848.40 = 11,227.79 : x
  2. Step 2: Convert to fraction form
    20,179.91/27,848.40 = 11,227.79/x
  3. Step 3: Cross multiply
    20,179.91x = 27,848.40 × 11,227.79
  4. Step 4: Simplify right side
    20,179.91x = 312,675,847.79
  5. Step 5: Solve for x
    x = 312,675,847.79/20,179.91
  6. Step 6: Final answer
    x = 15,494.42

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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.