Home / 31,912.20-47,868.42-11,135.70

Finding the Fourth Proportional to 31,912.20, 47,868.42 and 11,135.70

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Solution

The fourth proportional to 31,912.20, 47,868.42 and 11,135.70 is: 16,703.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,912.20 : 47,868.42 = 11,135.70 : x
  2. Step 2: Convert to fraction form
    31,912.20/47,868.42 = 11,135.70/x
  3. Step 3: Cross multiply
    31,912.20x = 47,868.42 × 11,135.70
  4. Step 4: Simplify right side
    31,912.20x = 533,048,364.59
  5. Step 5: Solve for x
    x = 533,048,364.59/31,912.20
  6. Step 6: Final answer
    x = 16,703.59

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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.