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Finding the Fourth Proportional to 33,645.65, 50,413.80 and 21,143.30

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Solution

The fourth proportional to 33,645.65, 50,413.80 and 21,143.30 is: 31,680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,645.65 : 50,413.80 = 21,143.30 : x
  2. Step 2: Convert to fraction form
    33,645.65/50,413.80 = 21,143.30/x
  3. Step 3: Cross multiply
    33,645.65x = 50,413.80 × 21,143.30
  4. Step 4: Simplify right side
    33,645.65x = 1,065,914,097.54
  5. Step 5: Solve for x
    x = 1,065,914,097.54/33,645.65
  6. Step 6: Final answer
    x = 31,680.59

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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.