Home / 20,748.66-31,121.97-7,600.04

Finding the Fourth Proportional to 20,748.66, 31,121.97 and 7,600.04

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Solution

The fourth proportional to 20,748.66, 31,121.97 and 7,600.04 is: 11,399.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.66 : 31,121.97 = 7,600.04 : x
  2. Step 2: Convert to fraction form
    20,748.66/31,121.97 = 7,600.04/x
  3. Step 3: Cross multiply
    20,748.66x = 31,121.97 × 7,600.04
  4. Step 4: Simplify right side
    20,748.66x = 236,528,061.27
  5. Step 5: Solve for x
    x = 236,528,061.27/20,748.66
  6. Step 6: Final answer
    x = 11,399.68

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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.