Home / 20,828.66-28,743.42-11,268.52

Finding the Fourth Proportional to 20,828.66, 28,743.42 and 11,268.52

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Solution

The fourth proportional to 20,828.66, 28,743.42 and 11,268.52 is: 15,550.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.66 : 28,743.42 = 11,268.52 : x
  2. Step 2: Convert to fraction form
    20,828.66/28,743.42 = 11,268.52/x
  3. Step 3: Cross multiply
    20,828.66x = 28,743.42 × 11,268.52
  4. Step 4: Simplify right side
    20,828.66x = 323,895,773.54
  5. Step 5: Solve for x
    x = 323,895,773.54/20,828.66
  6. Step 6: Final answer
    x = 15,550.49

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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.