Home / 20,942.57-31,409.20-6,147.52

Finding the Fourth Proportional to 20,942.57, 31,409.20 and 6,147.52

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Solution

The fourth proportional to 20,942.57, 31,409.20 and 6,147.52 is: 9,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.57 : 31,409.20 = 6,147.52 : x
  2. Step 2: Convert to fraction form
    20,942.57/31,409.20 = 6,147.52/x
  3. Step 3: Cross multiply
    20,942.57x = 31,409.20 × 6,147.52
  4. Step 4: Simplify right side
    20,942.57x = 193,088,614.35
  5. Step 5: Solve for x
    x = 193,088,614.35/20,942.57
  6. Step 6: Final answer
    x = 9,219.91

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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.