Home / 20,972.50-31,452.03-6,929.26

Finding the Fourth Proportional to 20,972.50, 31,452.03 and 6,929.26

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Solution

The fourth proportional to 20,972.50, 31,452.03 and 6,929.26 is: 10,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.50 : 31,452.03 = 6,929.26 : x
  2. Step 2: Convert to fraction form
    20,972.50/31,452.03 = 6,929.26/x
  3. Step 3: Cross multiply
    20,972.50x = 31,452.03 × 6,929.26
  4. Step 4: Simplify right side
    20,972.50x = 217,939,293.40
  5. Step 5: Solve for x
    x = 217,939,293.40/20,972.50
  6. Step 6: Final answer
    x = 10,391.67

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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.