Home / 15,003.05-20,704.01-8,288.69

Finding the Fourth Proportional to 15,003.05, 20,704.01 and 8,288.69

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Solution

The fourth proportional to 15,003.05, 20,704.01 and 8,288.69 is: 11,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.05 : 20,704.01 = 8,288.69 : x
  2. Step 2: Convert to fraction form
    15,003.05/20,704.01 = 8,288.69/x
  3. Step 3: Cross multiply
    15,003.05x = 20,704.01 × 8,288.69
  4. Step 4: Simplify right side
    15,003.05x = 171,608,975.68
  5. Step 5: Solve for x
    x = 171,608,975.68/15,003.05
  6. Step 6: Final answer
    x = 11,438.28

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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.