Home / 20,564.73-28,379.61-11,133.27

Finding the Fourth Proportional to 20,564.73, 28,379.61 and 11,133.27

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Solution

The fourth proportional to 20,564.73, 28,379.61 and 11,133.27 is: 15,364.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.73 : 28,379.61 = 11,133.27 : x
  2. Step 2: Convert to fraction form
    20,564.73/28,379.61 = 11,133.27/x
  3. Step 3: Cross multiply
    20,564.73x = 28,379.61 × 11,133.27
  4. Step 4: Simplify right side
    20,564.73x = 315,957,860.62
  5. Step 5: Solve for x
    x = 315,957,860.62/20,564.73
  6. Step 6: Final answer
    x = 15,364.07

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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.