Home / 28,413.57-39,211.25-15,836.97

Finding the Fourth Proportional to 28,413.57, 39,211.25 and 15,836.97

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Solution

The fourth proportional to 28,413.57, 39,211.25 and 15,836.97 is: 21,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.57 : 39,211.25 = 15,836.97 : x
  2. Step 2: Convert to fraction form
    28,413.57/39,211.25 = 15,836.97/x
  3. Step 3: Cross multiply
    28,413.57x = 39,211.25 × 15,836.97
  4. Step 4: Simplify right side
    28,413.57x = 620,987,389.91
  5. Step 5: Solve for x
    x = 620,987,389.91/28,413.57
  6. Step 6: Final answer
    x = 21,855.31

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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.