Home / 31,874.68-47,819.58-20,197.72

Finding the Fourth Proportional to 31,874.68, 47,819.58 and 20,197.72

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Solution

The fourth proportional to 31,874.68, 47,819.58 and 20,197.72 is: 30,301.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,874.68 : 47,819.58 = 20,197.72 : x
  2. Step 2: Convert to fraction form
    31,874.68/47,819.58 = 20,197.72/x
  3. Step 3: Cross multiply
    31,874.68x = 47,819.58 × 20,197.72
  4. Step 4: Simplify right side
    31,874.68x = 965,846,487.36
  5. Step 5: Solve for x
    x = 965,846,487.36/31,874.68
  6. Step 6: Final answer
    x = 30,301.37

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1.5x scale

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.