Home / 21,205.26-31,807.88-6,413.84

Finding the Fourth Proportional to 21,205.26, 31,807.88 and 6,413.84

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Solution

The fourth proportional to 21,205.26, 31,807.88 and 6,413.84 is: 9,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.26 : 31,807.88 = 6,413.84 : x
  2. Step 2: Convert to fraction form
    21,205.26/31,807.88 = 6,413.84/x
  3. Step 3: Cross multiply
    21,205.26x = 31,807.88 × 6,413.84
  4. Step 4: Simplify right side
    21,205.26x = 204,010,653.06
  5. Step 5: Solve for x
    x = 204,010,653.06/21,205.26
  6. Step 6: Final answer
    x = 9,620.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.