Home / 31,471.86-47,201.52-20,193.84

Finding the Fourth Proportional to 31,471.86, 47,201.52 and 20,193.84

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Solution

The fourth proportional to 31,471.86, 47,201.52 and 20,193.84 is: 30,286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,471.86 : 47,201.52 = 20,193.84 : x
  2. Step 2: Convert to fraction form
    31,471.86/47,201.52 = 20,193.84/x
  3. Step 3: Cross multiply
    31,471.86x = 47,201.52 × 20,193.84
  4. Step 4: Simplify right side
    31,471.86x = 953,179,942.64
  5. Step 5: Solve for x
    x = 953,179,942.64/31,471.86
  6. Step 6: Final answer
    x = 30,286.74

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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.