Home / 20,975.11-31,462.38-8,495.03

Finding the Fourth Proportional to 20,975.11, 31,462.38 and 8,495.03

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Solution

The fourth proportional to 20,975.11, 31,462.38 and 8,495.03 is: 12,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.11 : 31,462.38 = 8,495.03 : x
  2. Step 2: Convert to fraction form
    20,975.11/31,462.38 = 8,495.03/x
  3. Step 3: Cross multiply
    20,975.11x = 31,462.38 × 8,495.03
  4. Step 4: Simplify right side
    20,975.11x = 267,273,861.97
  5. Step 5: Solve for x
    x = 267,273,861.97/20,975.11
  6. Step 6: Final answer
    x = 12,742.43

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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.