Home / 20,589.36-28,413.33-11,157.96

Finding the Fourth Proportional to 20,589.36, 28,413.33 and 11,157.96

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Solution

The fourth proportional to 20,589.36, 28,413.33 and 11,157.96 is: 15,397.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.36 : 28,413.33 = 11,157.96 : x
  2. Step 2: Convert to fraction form
    20,589.36/28,413.33 = 11,157.96/x
  3. Step 3: Cross multiply
    20,589.36x = 28,413.33 × 11,157.96
  4. Step 4: Simplify right side
    20,589.36x = 317,034,799.61
  5. Step 5: Solve for x
    x = 317,034,799.61/20,589.36
  6. Step 6: Final answer
    x = 15,397.99

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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.