Home / 20,824.14-31,236.20-9,136.44

Finding the Fourth Proportional to 20,824.14, 31,236.20 and 9,136.44

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Solution

The fourth proportional to 20,824.14, 31,236.20 and 9,136.44 is: 13,704.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.14 : 31,236.20 = 9,136.44 : x
  2. Step 2: Convert to fraction form
    20,824.14/31,236.20 = 9,136.44/x
  3. Step 3: Cross multiply
    20,824.14x = 31,236.20 × 9,136.44
  4. Step 4: Simplify right side
    20,824.14x = 285,387,667.13
  5. Step 5: Solve for x
    x = 285,387,667.13/20,824.14
  6. Step 6: Final answer
    x = 13,704.66

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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.