Home / 21,843.84-30,144.78-12,413.28

Finding the Fourth Proportional to 21,843.84, 30,144.78 and 12,413.28

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Solution

The fourth proportional to 21,843.84, 30,144.78 and 12,413.28 is: 17,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843.84 : 30,144.78 = 12,413.28 : x
  2. Step 2: Convert to fraction form
    21,843.84/30,144.78 = 12,413.28/x
  3. Step 3: Cross multiply
    21,843.84x = 30,144.78 × 12,413.28
  4. Step 4: Simplify right side
    21,843.84x = 374,195,594.68
  5. Step 5: Solve for x
    x = 374,195,594.68/21,843.84
  6. Step 6: Final answer
    x = 17,130.49

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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.