Home / 31,399.45-47,095.46-8,912.11

Finding the Fourth Proportional to 31,399.45, 47,095.46 and 8,912.11

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Solution

The fourth proportional to 31,399.45, 47,095.46 and 8,912.11 is: 13,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,399.45 : 47,095.46 = 8,912.11 : x
  2. Step 2: Convert to fraction form
    31,399.45/47,095.46 = 8,912.11/x
  3. Step 3: Cross multiply
    31,399.45x = 47,095.46 × 8,912.11
  4. Step 4: Simplify right side
    31,399.45x = 419,719,920.02
  5. Step 5: Solve for x
    x = 419,719,920.02/31,399.45
  6. Step 6: Final answer
    x = 13,367.11

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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.