Home / 31,865.78-47,755.61-12,133.57

Finding the Fourth Proportional to 31,865.78, 47,755.61 and 12,133.57

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Solution

The fourth proportional to 31,865.78, 47,755.61 and 12,133.57 is: 18,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,865.78 : 47,755.61 = 12,133.57 : x
  2. Step 2: Convert to fraction form
    31,865.78/47,755.61 = 12,133.57/x
  3. Step 3: Cross multiply
    31,865.78x = 47,755.61 × 12,133.57
  4. Step 4: Simplify right side
    31,865.78x = 579,445,890.37
  5. Step 5: Solve for x
    x = 579,445,890.37/31,865.78
  6. Step 6: Final answer
    x = 18,183.96

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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.