Home / 13,776.62-20,666.39-5,879.96

Finding the Fourth Proportional to 13,776.62, 20,666.39 and 5,879.96

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Solution

The fourth proportional to 13,776.62, 20,666.39 and 5,879.96 is: 8,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.62 : 20,666.39 = 5,879.96 : x
  2. Step 2: Convert to fraction form
    13,776.62/20,666.39 = 5,879.96/x
  3. Step 3: Cross multiply
    13,776.62x = 20,666.39 × 5,879.96
  4. Step 4: Simplify right side
    13,776.62x = 121,517,413.81
  5. Step 5: Solve for x
    x = 121,517,413.81/13,776.62
  6. Step 6: Final answer
    x = 8,820.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.