Home / 20,914.45-31,370.15-6,874.31

Finding the Fourth Proportional to 20,914.45, 31,370.15 and 6,874.31

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Solution

The fourth proportional to 20,914.45, 31,370.15 and 6,874.31 is: 10,310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.45 : 31,370.15 = 6,874.31 : x
  2. Step 2: Convert to fraction form
    20,914.45/31,370.15 = 6,874.31/x
  3. Step 3: Cross multiply
    20,914.45x = 31,370.15 × 6,874.31
  4. Step 4: Simplify right side
    20,914.45x = 215,648,231.46
  5. Step 5: Solve for x
    x = 215,648,231.46/20,914.45
  6. Step 6: Final answer
    x = 10,310.97

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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.