Home / 20,239.60-27,930.52-11,287.22

Finding the Fourth Proportional to 20,239.60, 27,930.52 and 11,287.22

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Solution

The fourth proportional to 20,239.60, 27,930.52 and 11,287.22 is: 15,576.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.60 : 27,930.52 = 11,287.22 : x
  2. Step 2: Convert to fraction form
    20,239.60/27,930.52 = 11,287.22/x
  3. Step 3: Cross multiply
    20,239.60x = 27,930.52 × 11,287.22
  4. Step 4: Simplify right side
    20,239.60x = 315,257,923.95
  5. Step 5: Solve for x
    x = 315,257,923.95/20,239.60
  6. Step 6: Final answer
    x = 15,576.29

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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.