Home / 28,413.62-39,211.02-15,839.18

Finding the Fourth Proportional to 28,413.62, 39,211.02 and 15,839.18

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Solution

The fourth proportional to 28,413.62, 39,211.02 and 15,839.18 is: 21,858.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.62 : 39,211.02 = 15,839.18 : x
  2. Step 2: Convert to fraction form
    28,413.62/39,211.02 = 15,839.18/x
  3. Step 3: Cross multiply
    28,413.62x = 39,211.02 × 15,839.18
  4. Step 4: Simplify right side
    28,413.62x = 621,070,403.76
  5. Step 5: Solve for x
    x = 621,070,403.76/28,413.62
  6. Step 6: Final answer
    x = 21,858.19

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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.