Home / 20,746.05-31,119.18-5,163.67

Finding the Fourth Proportional to 20,746.05, 31,119.18 and 5,163.67

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Solution

The fourth proportional to 20,746.05, 31,119.18 and 5,163.67 is: 7,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.05 : 31,119.18 = 5,163.67 : x
  2. Step 2: Convert to fraction form
    20,746.05/31,119.18 = 5,163.67/x
  3. Step 3: Cross multiply
    20,746.05x = 31,119.18 × 5,163.67
  4. Step 4: Simplify right side
    20,746.05x = 160,689,176.19
  5. Step 5: Solve for x
    x = 160,689,176.19/20,746.05
  6. Step 6: Final answer
    x = 7,745.53

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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.