Home / 31,622.26-43,647.81-20,874.97

Finding the Fourth Proportional to 31,622.26, 43,647.81 and 20,874.97

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Solution

The fourth proportional to 31,622.26, 43,647.81 and 20,874.97 is: 28,813.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.26 : 43,647.81 = 20,874.97 : x
  2. Step 2: Convert to fraction form
    31,622.26/43,647.81 = 20,874.97/x
  3. Step 3: Cross multiply
    31,622.26x = 43,647.81 × 20,874.97
  4. Step 4: Simplify right side
    31,622.26x = 911,146,724.32
  5. Step 5: Solve for x
    x = 911,146,724.32/31,622.26
  6. Step 6: Final answer
    x = 28,813.46

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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.