Home / 31,819.56-47,725.60-8,447.80

Finding the Fourth Proportional to 31,819.56, 47,725.60 and 8,447.80

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Solution

The fourth proportional to 31,819.56, 47,725.60 and 8,447.80 is: 12,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.56 : 47,725.60 = 8,447.80 : x
  2. Step 2: Convert to fraction form
    31,819.56/47,725.60 = 8,447.80/x
  3. Step 3: Cross multiply
    31,819.56x = 47,725.60 × 8,447.80
  4. Step 4: Simplify right side
    31,819.56x = 403,176,323.68
  5. Step 5: Solve for x
    x = 403,176,323.68/31,819.56
  6. Step 6: Final answer
    x = 12,670.71

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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.