Home / 20,847.10-28,769.01-11,286.99

Finding the Fourth Proportional to 20,847.10, 28,769.01 and 11,286.99

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Solution

The fourth proportional to 20,847.10, 28,769.01 and 11,286.99 is: 15,576.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.10 : 28,769.01 = 11,286.99 : x
  2. Step 2: Convert to fraction form
    20,847.10/28,769.01 = 11,286.99/x
  3. Step 3: Cross multiply
    20,847.10x = 28,769.01 × 11,286.99
  4. Step 4: Simplify right side
    20,847.10x = 324,715,556.40
  5. Step 5: Solve for x
    x = 324,715,556.40/20,847.10
  6. Step 6: Final answer
    x = 15,576.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.