Home / 20,413.40-28,170.45-11,460.83

Finding the Fourth Proportional to 20,413.40, 28,170.45 and 11,460.83

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Solution

The fourth proportional to 20,413.40, 28,170.45 and 11,460.83 is: 15,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.40 : 28,170.45 = 11,460.83 : x
  2. Step 2: Convert to fraction form
    20,413.40/28,170.45 = 11,460.83/x
  3. Step 3: Cross multiply
    20,413.40x = 28,170.45 × 11,460.83
  4. Step 4: Simplify right side
    20,413.40x = 322,856,597.62
  5. Step 5: Solve for x
    x = 322,856,597.62/20,413.40
  6. Step 6: Final answer
    x = 15,815.92

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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.