Home / 20,087.91-30,136.28-8,241.75

Finding the Fourth Proportional to 20,087.91, 30,136.28 and 8,241.75

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Solution

The fourth proportional to 20,087.91, 30,136.28 and 8,241.75 is: 12,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.91 : 30,136.28 = 8,241.75 : x
  2. Step 2: Convert to fraction form
    20,087.91/30,136.28 = 8,241.75/x
  3. Step 3: Cross multiply
    20,087.91x = 30,136.28 × 8,241.75
  4. Step 4: Simplify right side
    20,087.91x = 248,375,644.48
  5. Step 5: Solve for x
    x = 248,375,644.48/20,087.91
  6. Step 6: Final answer
    x = 12,364.43

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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.