Home / 31,914.98-47,872.44-8,540.80

Finding the Fourth Proportional to 31,914.98, 47,872.44 and 8,540.80

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Solution

The fourth proportional to 31,914.98, 47,872.44 and 8,540.80 is: 12,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,914.98 : 47,872.44 = 8,540.80 : x
  2. Step 2: Convert to fraction form
    31,914.98/47,872.44 = 8,540.80/x
  3. Step 3: Cross multiply
    31,914.98x = 47,872.44 × 8,540.80
  4. Step 4: Simplify right side
    31,914.98x = 408,868,935.55
  5. Step 5: Solve for x
    x = 408,868,935.55/31,914.98
  6. Step 6: Final answer
    x = 12,811.19

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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.