Home / 20,845.65-28,767.34-11,413.61

Finding the Fourth Proportional to 20,845.65, 28,767.34 and 11,413.61

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Solution

The fourth proportional to 20,845.65, 28,767.34 and 11,413.61 is: 15,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.65 : 28,767.34 = 11,413.61 : x
  2. Step 2: Convert to fraction form
    20,845.65/28,767.34 = 11,413.61/x
  3. Step 3: Cross multiply
    20,845.65x = 28,767.34 × 11,413.61
  4. Step 4: Simplify right side
    20,845.65x = 328,338,998.59
  5. Step 5: Solve for x
    x = 328,338,998.59/20,845.65
  6. Step 6: Final answer
    x = 15,750.96

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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.