Home / 31,413.42-47,112.38-18,766.64

Finding the Fourth Proportional to 31,413.42, 47,112.38 and 18,766.64

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Solution

The fourth proportional to 31,413.42, 47,112.38 and 18,766.64 is: 28,145.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.42 : 47,112.38 = 18,766.64 : x
  2. Step 2: Convert to fraction form
    31,413.42/47,112.38 = 18,766.64/x
  3. Step 3: Cross multiply
    31,413.42x = 47,112.38 × 18,766.64
  4. Step 4: Simplify right side
    31,413.42x = 884,141,009.88
  5. Step 5: Solve for x
    x = 884,141,009.88/31,413.42
  6. Step 6: Final answer
    x = 28,145.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.