Home / 21,314.88-29,413.94-13,361.49

Finding the Fourth Proportional to 21,314.88, 29,413.94 and 13,361.49

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Solution

The fourth proportional to 21,314.88, 29,413.94 and 13,361.49 is: 18,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.88 : 29,413.94 = 13,361.49 : x
  2. Step 2: Convert to fraction form
    21,314.88/29,413.94 = 13,361.49/x
  3. Step 3: Cross multiply
    21,314.88x = 29,413.94 × 13,361.49
  4. Step 4: Simplify right side
    21,314.88x = 393,013,998.36
  5. Step 5: Solve for x
    x = 393,013,998.36/21,314.88
  6. Step 6: Final answer
    x = 18,438.48

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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.