Home / 21,314.11-29,413.84-11,755.09

Finding the Fourth Proportional to 21,314.11, 29,413.84 and 11,755.09

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Solution

The fourth proportional to 21,314.11, 29,413.84 and 11,755.09 is: 16,222.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.11 : 29,413.84 = 11,755.09 : x
  2. Step 2: Convert to fraction form
    21,314.11/29,413.84 = 11,755.09/x
  3. Step 3: Cross multiply
    21,314.11x = 29,413.84 × 11,755.09
  4. Step 4: Simplify right side
    21,314.11x = 345,762,336.45
  5. Step 5: Solve for x
    x = 345,762,336.45/21,314.11
  6. Step 6: Final answer
    x = 16,222.23

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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.