Home / 20,942.82-31,412.70-6,152.90

Finding the Fourth Proportional to 20,942.82, 31,412.70 and 6,152.90

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Solution

The fourth proportional to 20,942.82, 31,412.70 and 6,152.90 is: 9,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.82 : 31,412.70 = 6,152.90 : x
  2. Step 2: Convert to fraction form
    20,942.82/31,412.70 = 6,152.90/x
  3. Step 3: Cross multiply
    20,942.82x = 31,412.70 × 6,152.90
  4. Step 4: Simplify right side
    20,942.82x = 193,279,201.83
  5. Step 5: Solve for x
    x = 193,279,201.83/20,942.82
  6. Step 6: Final answer
    x = 9,228.90

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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.