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Finding the Fourth Proportional to 20,239.44, 27,927.96 and 11,287.44

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Solution

The fourth proportional to 20,239.44, 27,927.96 and 11,287.44 is: 15,575.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.44 : 27,927.96 = 11,287.44 : x
  2. Step 2: Convert to fraction form
    20,239.44/27,927.96 = 11,287.44/x
  3. Step 3: Cross multiply
    20,239.44x = 27,927.96 × 11,287.44
  4. Step 4: Simplify right side
    20,239.44x = 315,235,172.82
  5. Step 5: Solve for x
    x = 315,235,172.82/20,239.44
  6. Step 6: Final answer
    x = 15,575.29

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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.