Home / 20,983.64-31,475.76-8,336.54

Finding the Fourth Proportional to 20,983.64, 31,475.76 and 8,336.54

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Solution

The fourth proportional to 20,983.64, 31,475.76 and 8,336.54 is: 12,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.64 : 31,475.76 = 8,336.54 : x
  2. Step 2: Convert to fraction form
    20,983.64/31,475.76 = 8,336.54/x
  3. Step 3: Cross multiply
    20,983.64x = 31,475.76 × 8,336.54
  4. Step 4: Simplify right side
    20,983.64x = 262,398,932.27
  5. Step 5: Solve for x
    x = 262,398,932.27/20,983.64
  6. Step 6: Final answer
    x = 12,504.93

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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.