Home / 20,119.26-27,764.06-11,166.50

Finding the Fourth Proportional to 20,119.26, 27,764.06 and 11,166.50

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Solution

The fourth proportional to 20,119.26, 27,764.06 and 11,166.50 is: 15,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.26 : 27,764.06 = 11,166.50 : x
  2. Step 2: Convert to fraction form
    20,119.26/27,764.06 = 11,166.50/x
  3. Step 3: Cross multiply
    20,119.26x = 27,764.06 × 11,166.50
  4. Step 4: Simplify right side
    20,119.26x = 310,027,375.99
  5. Step 5: Solve for x
    x = 310,027,375.99/20,119.26
  6. Step 6: Final answer
    x = 15,409.48

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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.