Home / 31,413.90-47,115.45-11,682.30

Finding the Fourth Proportional to 31,413.90, 47,115.45 and 11,682.30

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Solution

The fourth proportional to 31,413.90, 47,115.45 and 11,682.30 is: 17,521.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.90 : 47,115.45 = 11,682.30 : x
  2. Step 2: Convert to fraction form
    31,413.90/47,115.45 = 11,682.30/x
  3. Step 3: Cross multiply
    31,413.90x = 47,115.45 × 11,682.30
  4. Step 4: Simplify right side
    31,413.90x = 550,416,821.54
  5. Step 5: Solve for x
    x = 550,416,821.54/31,413.90
  6. Step 6: Final answer
    x = 17,521.44

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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.