Home / 20,221.13-27,904.78-11,268.44

Finding the Fourth Proportional to 20,221.13, 27,904.78 and 11,268.44

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Solution

The fourth proportional to 20,221.13, 27,904.78 and 11,268.44 is: 15,550.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.13 : 27,904.78 = 11,268.44 : x
  2. Step 2: Convert to fraction form
    20,221.13/27,904.78 = 11,268.44/x
  3. Step 3: Cross multiply
    20,221.13x = 27,904.78 × 11,268.44
  4. Step 4: Simplify right side
    20,221.13x = 314,443,339.14
  5. Step 5: Solve for x
    x = 314,443,339.14/20,221.13
  6. Step 6: Final answer
    x = 15,550.24

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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.