Home / 20,217.20-30,311.40-7,732.40

Finding the Fourth Proportional to 20,217.20, 30,311.40 and 7,732.40

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Solution

The fourth proportional to 20,217.20, 30,311.40 and 7,732.40 is: 11,593.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.20 : 30,311.40 = 7,732.40 : x
  2. Step 2: Convert to fraction form
    20,217.20/30,311.40 = 7,732.40/x
  3. Step 3: Cross multiply
    20,217.20x = 30,311.40 × 7,732.40
  4. Step 4: Simplify right side
    20,217.20x = 234,379,869.36
  5. Step 5: Solve for x
    x = 234,379,869.36/20,217.20
  6. Step 6: Final answer
    x = 11,593.09

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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.