Home / 20,746.35-31,119.46-5,163.97

Finding the Fourth Proportional to 20,746.35, 31,119.46 and 5,163.97

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Solution

The fourth proportional to 20,746.35, 31,119.46 and 5,163.97 is: 7,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.35 : 31,119.46 = 5,163.97 : x
  2. Step 2: Convert to fraction form
    20,746.35/31,119.46 = 5,163.97/x
  3. Step 3: Cross multiply
    20,746.35x = 31,119.46 × 5,163.97
  4. Step 4: Simplify right side
    20,746.35x = 160,699,957.86
  5. Step 5: Solve for x
    x = 160,699,957.86/20,746.35
  6. Step 6: Final answer
    x = 7,745.94

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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.