Home / 20,761.32-31,143.78-5,971.44

Finding the Fourth Proportional to 20,761.32, 31,143.78 and 5,971.44

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Solution

The fourth proportional to 20,761.32, 31,143.78 and 5,971.44 is: 8,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.32 : 31,143.78 = 5,971.44 : x
  2. Step 2: Convert to fraction form
    20,761.32/31,143.78 = 5,971.44/x
  3. Step 3: Cross multiply
    20,761.32x = 31,143.78 × 5,971.44
  4. Step 4: Simplify right side
    20,761.32x = 185,973,213.64
  5. Step 5: Solve for x
    x = 185,973,213.64/20,761.32
  6. Step 6: Final answer
    x = 8,957.68

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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.