Home / 20,817.62-31,236.68-9,722.69

Finding the Fourth Proportional to 20,817.62, 31,236.68 and 9,722.69

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Solution

The fourth proportional to 20,817.62, 31,236.68 and 9,722.69 is: 14,588.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.62 : 31,236.68 = 9,722.69 : x
  2. Step 2: Convert to fraction form
    20,817.62/31,236.68 = 9,722.69/x
  3. Step 3: Cross multiply
    20,817.62x = 31,236.68 × 9,722.69
  4. Step 4: Simplify right side
    20,817.62x = 303,704,556.27
  5. Step 5: Solve for x
    x = 303,704,556.27/20,817.62
  6. Step 6: Final answer
    x = 14,588.82

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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.