Home / 20,746.08-31,119.34-5,163.71

Finding the Fourth Proportional to 20,746.08, 31,119.34 and 5,163.71

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Solution

The fourth proportional to 20,746.08, 31,119.34 and 5,163.71 is: 7,745.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.08 : 31,119.34 = 5,163.71 : x
  2. Step 2: Convert to fraction form
    20,746.08/31,119.34 = 5,163.71/x
  3. Step 3: Cross multiply
    20,746.08x = 31,119.34 × 5,163.71
  4. Step 4: Simplify right side
    20,746.08x = 160,691,247.15
  5. Step 5: Solve for x
    x = 160,691,247.15/20,746.08
  6. Step 6: Final answer
    x = 7,745.62

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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.