Home / 13,425.90-20,136.33-5,634.78

Finding the Fourth Proportional to 13,425.90, 20,136.33 and 5,634.78

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Solution

The fourth proportional to 13,425.90, 20,136.33 and 5,634.78 is: 8,451.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.90 : 20,136.33 = 5,634.78 : x
  2. Step 2: Convert to fraction form
    13,425.90/20,136.33 = 5,634.78/x
  3. Step 3: Cross multiply
    13,425.90x = 20,136.33 × 5,634.78
  4. Step 4: Simplify right side
    13,425.90x = 113,463,789.56
  5. Step 5: Solve for x
    x = 113,463,789.56/13,425.90
  6. Step 6: Final answer
    x = 8,451.11

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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.