Home / 20,942.47-31,401.55-8,452.27

Finding the Fourth Proportional to 20,942.47, 31,401.55 and 8,452.27

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Solution

The fourth proportional to 20,942.47, 31,401.55 and 8,452.27 is: 12,673.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.47 : 31,401.55 = 8,452.27 : x
  2. Step 2: Convert to fraction form
    20,942.47/31,401.55 = 8,452.27/x
  3. Step 3: Cross multiply
    20,942.47x = 31,401.55 × 8,452.27
  4. Step 4: Simplify right side
    20,942.47x = 265,414,379.02
  5. Step 5: Solve for x
    x = 265,414,379.02/20,942.47
  6. Step 6: Final answer
    x = 12,673.50

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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.