Home / 20,778.66-31,160.61-6,735.27

Finding the Fourth Proportional to 20,778.66, 31,160.61 and 6,735.27

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Solution

The fourth proportional to 20,778.66, 31,160.61 and 6,735.27 is: 10,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.66 : 31,160.61 = 6,735.27 : x
  2. Step 2: Convert to fraction form
    20,778.66/31,160.61 = 6,735.27/x
  3. Step 3: Cross multiply
    20,778.66x = 31,160.61 × 6,735.27
  4. Step 4: Simplify right side
    20,778.66x = 209,875,121.71
  5. Step 5: Solve for x
    x = 209,875,121.71/20,778.66
  6. Step 6: Final answer
    x = 10,100.51

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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.