Home / 20,845.32-28,766.53-11,413.88

Finding the Fourth Proportional to 20,845.32, 28,766.53 and 11,413.88

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Solution

The fourth proportional to 20,845.32, 28,766.53 and 11,413.88 is: 15,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.32 : 28,766.53 = 11,413.88 : x
  2. Step 2: Convert to fraction form
    20,845.32/28,766.53 = 11,413.88/x
  3. Step 3: Cross multiply
    20,845.32x = 28,766.53 × 11,413.88
  4. Step 4: Simplify right side
    20,845.32x = 328,337,721.44
  5. Step 5: Solve for x
    x = 328,337,721.44/20,845.32
  6. Step 6: Final answer
    x = 15,751.15

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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.