Home / 28,413.87-42,611.57-13,418.66

Finding the Fourth Proportional to 28,413.87, 42,611.57 and 13,418.66

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Solution

The fourth proportional to 28,413.87, 42,611.57 and 13,418.66 is: 20,123.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.87 : 42,611.57 = 13,418.66 : x
  2. Step 2: Convert to fraction form
    28,413.87/42,611.57 = 13,418.66/x
  3. Step 3: Cross multiply
    28,413.87x = 42,611.57 × 13,418.66
  4. Step 4: Simplify right side
    28,413.87x = 571,790,209.33
  5. Step 5: Solve for x
    x = 571,790,209.33/28,413.87
  6. Step 6: Final answer
    x = 20,123.63

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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.