Home / 20,103.70-27,743.13-11,151.31

Finding the Fourth Proportional to 20,103.70, 27,743.13 and 11,151.31

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Solution

The fourth proportional to 20,103.70, 27,743.13 and 11,151.31 is: 15,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.70 : 27,743.13 = 11,151.31 : x
  2. Step 2: Convert to fraction form
    20,103.70/27,743.13 = 11,151.31/x
  3. Step 3: Cross multiply
    20,103.70x = 27,743.13 × 11,151.31
  4. Step 4: Simplify right side
    20,103.70x = 309,372,243.00
  5. Step 5: Solve for x
    x = 309,372,243.00/20,103.70
  6. Step 6: Final answer
    x = 15,388.82

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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.