Home / 20,755.44-31,149.36-7,618.32

Finding the Fourth Proportional to 20,755.44, 31,149.36 and 7,618.32

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Solution

The fourth proportional to 20,755.44, 31,149.36 and 7,618.32 is: 11,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.44 : 31,149.36 = 7,618.32 : x
  2. Step 2: Convert to fraction form
    20,755.44/31,149.36 = 7,618.32/x
  3. Step 3: Cross multiply
    20,755.44x = 31,149.36 × 7,618.32
  4. Step 4: Simplify right side
    20,755.44x = 237,305,792.28
  5. Step 5: Solve for x
    x = 237,305,792.28/20,755.44
  6. Step 6: Final answer
    x = 11,433.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.