Home / 13,413.13-18,512.49-8,108.44

Finding the Fourth Proportional to 13,413.13, 18,512.49 and 8,108.44

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Solution

The fourth proportional to 13,413.13, 18,512.49 and 8,108.44 is: 11,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.13 : 18,512.49 = 8,108.44 : x
  2. Step 2: Convert to fraction form
    13,413.13/18,512.49 = 8,108.44/x
  3. Step 3: Cross multiply
    13,413.13x = 18,512.49 × 8,108.44
  4. Step 4: Simplify right side
    13,413.13x = 150,107,414.42
  5. Step 5: Solve for x
    x = 150,107,414.42/13,413.13
  6. Step 6: Final answer
    x = 11,191.08

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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.