Home / 20,778.35-31,167.53-5,195.98

Finding the Fourth Proportional to 20,778.35, 31,167.53 and 5,195.98

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Solution

The fourth proportional to 20,778.35, 31,167.53 and 5,195.98 is: 7,793.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.35 : 31,167.53 = 5,195.98 : x
  2. Step 2: Convert to fraction form
    20,778.35/31,167.53 = 5,195.98/x
  3. Step 3: Cross multiply
    20,778.35x = 31,167.53 × 5,195.98
  4. Step 4: Simplify right side
    20,778.35x = 161,945,680.71
  5. Step 5: Solve for x
    x = 161,945,680.71/20,778.35
  6. Step 6: Final answer
    x = 7,793.96

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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.