Home / 22,879.16-31,571.78-12,805.90

Finding the Fourth Proportional to 22,879.16, 31,571.78 and 12,805.90

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Solution

The fourth proportional to 22,879.16, 31,571.78 and 12,805.90 is: 17,671.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,879.16 : 31,571.78 = 12,805.90 : x
  2. Step 2: Convert to fraction form
    22,879.16/31,571.78 = 12,805.90/x
  3. Step 3: Cross multiply
    22,879.16x = 31,571.78 × 12,805.90
  4. Step 4: Simplify right side
    22,879.16x = 404,304,914.54
  5. Step 5: Solve for x
    x = 404,304,914.54/22,879.16
  6. Step 6: Final answer
    x = 17,671.32

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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.