Home / 11,129.28-15,358.42-6,413.44

Finding the Fourth Proportional to 11,129.28, 15,358.42 and 6,413.44

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Solution

The fourth proportional to 11,129.28, 15,358.42 and 6,413.44 is: 8,850.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.28 : 15,358.42 = 6,413.44 : x
  2. Step 2: Convert to fraction form
    11,129.28/15,358.42 = 6,413.44/x
  3. Step 3: Cross multiply
    11,129.28x = 15,358.42 × 6,413.44
  4. Step 4: Simplify right side
    11,129.28x = 98,500,305.16
  5. Step 5: Solve for x
    x = 98,500,305.16/11,129.28
  6. Step 6: Final answer
    x = 8,850.56

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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.