Home / 31,413.03-47,128.32-12,706.20

Finding the Fourth Proportional to 31,413.03, 47,128.32 and 12,706.20

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Solution

The fourth proportional to 31,413.03, 47,128.32 and 12,706.20 is: 19,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.03 : 47,128.32 = 12,706.20 : x
  2. Step 2: Convert to fraction form
    31,413.03/47,128.32 = 12,706.20/x
  3. Step 3: Cross multiply
    31,413.03x = 47,128.32 × 12,706.20
  4. Step 4: Simplify right side
    31,413.03x = 598,821,859.58
  5. Step 5: Solve for x
    x = 598,821,859.58/31,413.03
  6. Step 6: Final answer
    x = 19,062.85

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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.