Home / 22,199.12-30,634.67-12,128.14

Finding the Fourth Proportional to 22,199.12, 30,634.67 and 12,128.14

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Solution

The fourth proportional to 22,199.12, 30,634.67 and 12,128.14 is: 16,736.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,199.12 : 30,634.67 = 12,128.14 : x
  2. Step 2: Convert to fraction form
    22,199.12/30,634.67 = 12,128.14/x
  3. Step 3: Cross multiply
    22,199.12x = 30,634.67 × 12,128.14
  4. Step 4: Simplify right side
    22,199.12x = 371,541,413.44
  5. Step 5: Solve for x
    x = 371,541,413.44/22,199.12
  6. Step 6: Final answer
    x = 16,736.77

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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.