Home / 20,977.38-31,465.67-8,496.90

Finding the Fourth Proportional to 20,977.38, 31,465.67 and 8,496.90

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Solution

The fourth proportional to 20,977.38, 31,465.67 and 8,496.90 is: 12,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.38 : 31,465.67 = 8,496.90 : x
  2. Step 2: Convert to fraction form
    20,977.38/31,465.67 = 8,496.90/x
  3. Step 3: Cross multiply
    20,977.38x = 31,465.67 × 8,496.90
  4. Step 4: Simplify right side
    20,977.38x = 267,360,608.94
  5. Step 5: Solve for x
    x = 267,360,608.94/20,977.38
  6. Step 6: Final answer
    x = 12,745.19

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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.