Home / 11,147.82-16,720.37-6,470.38

Finding the Fourth Proportional to 11,147.82, 16,720.37 and 6,470.38

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Solution

The fourth proportional to 11,147.82, 16,720.37 and 6,470.38 is: 9,704.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.82 : 16,720.37 = 6,470.38 : x
  2. Step 2: Convert to fraction form
    11,147.82/16,720.37 = 6,470.38/x
  3. Step 3: Cross multiply
    11,147.82x = 16,720.37 × 6,470.38
  4. Step 4: Simplify right side
    11,147.82x = 108,187,031.69
  5. Step 5: Solve for x
    x = 108,187,031.69/11,147.82
  6. Step 6: Final answer
    x = 9,704.77

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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.