Home / 31,845.78-47,768.76-10,785.96

Finding the Fourth Proportional to 31,845.78, 47,768.76 and 10,785.96

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Solution

The fourth proportional to 31,845.78, 47,768.76 and 10,785.96 is: 16,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,845.78 : 47,768.76 = 10,785.96 : x
  2. Step 2: Convert to fraction form
    31,845.78/47,768.76 = 10,785.96/x
  3. Step 3: Cross multiply
    31,845.78x = 47,768.76 × 10,785.96
  4. Step 4: Simplify right side
    31,845.78x = 515,231,934.61
  5. Step 5: Solve for x
    x = 515,231,934.61/31,845.78
  6. Step 6: Final answer
    x = 16,178.97

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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.