Home / 20,246.22-27,939.88-11,171.90

Finding the Fourth Proportional to 20,246.22, 27,939.88 and 11,171.90

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Solution

The fourth proportional to 20,246.22, 27,939.88 and 11,171.90 is: 15,417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.22 : 27,939.88 = 11,171.90 : x
  2. Step 2: Convert to fraction form
    20,246.22/27,939.88 = 11,171.90/x
  3. Step 3: Cross multiply
    20,246.22x = 27,939.88 × 11,171.90
  4. Step 4: Simplify right side
    20,246.22x = 312,141,545.37
  5. Step 5: Solve for x
    x = 312,141,545.37/20,246.22
  6. Step 6: Final answer
    x = 15,417.28

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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.