Home / 20,828.42-28,743.09-11,268.27

Finding the Fourth Proportional to 20,828.42, 28,743.09 and 11,268.27

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Solution

The fourth proportional to 20,828.42, 28,743.09 and 11,268.27 is: 15,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.42 : 28,743.09 = 11,268.27 : x
  2. Step 2: Convert to fraction form
    20,828.42/28,743.09 = 11,268.27/x
  3. Step 3: Cross multiply
    20,828.42x = 28,743.09 × 11,268.27
  4. Step 4: Simplify right side
    20,828.42x = 323,884,998.78
  5. Step 5: Solve for x
    x = 323,884,998.78/20,828.42
  6. Step 6: Final answer
    x = 15,550.15

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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.