Home / 9,721.68-13,413.78-6,190.08

Finding the Fourth Proportional to 9,721.68, 13,413.78 and 6,190.08

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Solution

The fourth proportional to 9,721.68, 13,413.78 and 6,190.08 is: 8,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.68 : 13,413.78 = 6,190.08 : x
  2. Step 2: Convert to fraction form
    9,721.68/13,413.78 = 6,190.08/x
  3. Step 3: Cross multiply
    9,721.68x = 13,413.78 × 6,190.08
  4. Step 4: Simplify right side
    9,721.68x = 83,032,371.30
  5. Step 5: Solve for x
    x = 83,032,371.30/9,721.68
  6. Step 6: Final answer
    x = 8,540.95

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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.