Home / 20,221.61-27,905.44-11,268.92

Finding the Fourth Proportional to 20,221.61, 27,905.44 and 11,268.92

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Solution

The fourth proportional to 20,221.61, 27,905.44 and 11,268.92 is: 15,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.61 : 27,905.44 = 11,268.92 : x
  2. Step 2: Convert to fraction form
    20,221.61/27,905.44 = 11,268.92/x
  3. Step 3: Cross multiply
    20,221.61x = 27,905.44 × 11,268.92
  4. Step 4: Simplify right side
    20,221.61x = 314,464,170.92
  5. Step 5: Solve for x
    x = 314,464,170.92/20,221.61
  6. Step 6: Final answer
    x = 15,550.90

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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.