Home / 20,679.93-28,540.62-19,413.09

Finding the Fourth Proportional to 20,679.93, 28,540.62 and 19,413.09

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Solution

The fourth proportional to 20,679.93, 28,540.62 and 19,413.09 is: 26,792.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.93 : 28,540.62 = 19,413.09 : x
  2. Step 2: Convert to fraction form
    20,679.93/28,540.62 = 19,413.09/x
  3. Step 3: Cross multiply
    20,679.93x = 28,540.62 × 19,413.09
  4. Step 4: Simplify right side
    20,679.93x = 554,061,624.72
  5. Step 5: Solve for x
    x = 554,061,624.72/20,679.93
  6. Step 6: Final answer
    x = 26,792.24

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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.