Home / 20,589.27-28,413.09-11,157.84

Finding the Fourth Proportional to 20,589.27, 28,413.09 and 11,157.84

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Solution

The fourth proportional to 20,589.27, 28,413.09 and 11,157.84 is: 15,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.27 : 28,413.09 = 11,157.84 : x
  2. Step 2: Convert to fraction form
    20,589.27/28,413.09 = 11,157.84/x
  3. Step 3: Cross multiply
    20,589.27x = 28,413.09 × 11,157.84
  4. Step 4: Simplify right side
    20,589.27x = 317,028,712.13
  5. Step 5: Solve for x
    x = 317,028,712.13/20,589.27
  6. Step 6: Final answer
    x = 15,397.76

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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.