Home / 20,845.14-28,766.00-11,413.70

Finding the Fourth Proportional to 20,845.14, 28,766.00 and 11,413.70

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Solution

The fourth proportional to 20,845.14, 28,766.00 and 11,413.70 is: 15,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.14 : 28,766.00 = 11,413.70 : x
  2. Step 2: Convert to fraction form
    20,845.14/28,766.00 = 11,413.70/x
  3. Step 3: Cross multiply
    20,845.14x = 28,766.00 × 11,413.70
  4. Step 4: Simplify right side
    20,845.14x = 328,326,486.78
  5. Step 5: Solve for x
    x = 328,326,486.78/20,845.14
  6. Step 6: Final answer
    x = 15,750.75

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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.