Home / 28,560.21-39,413.58-15,640.62

Finding the Fourth Proportional to 28,560.21, 39,413.58 and 15,640.62

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Solution

The fourth proportional to 28,560.21, 39,413.58 and 15,640.62 is: 21,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.21 : 39,413.58 = 15,640.62 : x
  2. Step 2: Convert to fraction form
    28,560.21/39,413.58 = 15,640.62/x
  3. Step 3: Cross multiply
    28,560.21x = 39,413.58 × 15,640.62
  4. Step 4: Simplify right side
    28,560.21x = 616,453,014.52
  5. Step 5: Solve for x
    x = 616,453,014.52/28,560.21
  6. Step 6: Final answer
    x = 21,584.33

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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.