Home / 31,413.42-47,115.27-20,398.23

Finding the Fourth Proportional to 31,413.42, 47,115.27 and 20,398.23

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Solution

The fourth proportional to 31,413.42, 47,115.27 and 20,398.23 is: 30,594.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.42 : 47,115.27 = 20,398.23 : x
  2. Step 2: Convert to fraction form
    31,413.42/47,115.27 = 20,398.23/x
  3. Step 3: Cross multiply
    31,413.42x = 47,115.27 × 20,398.23
  4. Step 4: Simplify right side
    31,413.42x = 961,068,113.97
  5. Step 5: Solve for x
    x = 961,068,113.97/31,413.42
  6. Step 6: Final answer
    x = 30,594.19

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1.5x scale

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.