Home / 20,971.10-31,458.83-6,735.98

Finding the Fourth Proportional to 20,971.10, 31,458.83 and 6,735.98

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Solution

The fourth proportional to 20,971.10, 31,458.83 and 6,735.98 is: 10,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.10 : 31,458.83 = 6,735.98 : x
  2. Step 2: Convert to fraction form
    20,971.10/31,458.83 = 6,735.98/x
  3. Step 3: Cross multiply
    20,971.10x = 31,458.83 × 6,735.98
  4. Step 4: Simplify right side
    20,971.10x = 211,906,049.70
  5. Step 5: Solve for x
    x = 211,906,049.70/20,971.10
  6. Step 6: Final answer
    x = 10,104.67

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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.