Home / 20,729.25-28,606.37-11,297.88

Finding the Fourth Proportional to 20,729.25, 28,606.37 and 11,297.88

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Solution

The fourth proportional to 20,729.25, 28,606.37 and 11,297.88 is: 15,591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.25 : 28,606.37 = 11,297.88 : x
  2. Step 2: Convert to fraction form
    20,729.25/28,606.37 = 11,297.88/x
  3. Step 3: Cross multiply
    20,729.25x = 28,606.37 × 11,297.88
  4. Step 4: Simplify right side
    20,729.25x = 323,191,279.01
  5. Step 5: Solve for x
    x = 323,191,279.01/20,729.25
  6. Step 6: Final answer
    x = 15,591.07

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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.