Home / 31,715.28-47,568.87-8,343.54

Finding the Fourth Proportional to 31,715.28, 47,568.87 and 8,343.54

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Solution

The fourth proportional to 31,715.28, 47,568.87 and 8,343.54 is: 12,514.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,715.28 : 47,568.87 = 8,343.54 : x
  2. Step 2: Convert to fraction form
    31,715.28/47,568.87 = 8,343.54/x
  3. Step 3: Cross multiply
    31,715.28x = 47,568.87 × 8,343.54
  4. Step 4: Simplify right side
    31,715.28x = 396,892,769.60
  5. Step 5: Solve for x
    x = 396,892,769.60/31,715.28
  6. Step 6: Final answer
    x = 12,514.24

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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.