Home / 20,243.52-27,936.11-11,291.60

Finding the Fourth Proportional to 20,243.52, 27,936.11 and 11,291.60

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Solution

The fourth proportional to 20,243.52, 27,936.11 and 11,291.60 is: 15,582.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.52 : 27,936.11 = 11,291.60 : x
  2. Step 2: Convert to fraction form
    20,243.52/27,936.11 = 11,291.60/x
  3. Step 3: Cross multiply
    20,243.52x = 27,936.11 × 11,291.60
  4. Step 4: Simplify right side
    20,243.52x = 315,443,470.32
  5. Step 5: Solve for x
    x = 315,443,470.32/20,243.52
  6. Step 6: Final answer
    x = 15,582.44

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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.