Home / 11,613.80-17,415.66-4,215.80

Finding the Fourth Proportional to 11,613.80, 17,415.66 and 4,215.80

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Solution

The fourth proportional to 11,613.80, 17,415.66 and 4,215.80 is: 6,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.80 : 17,415.66 = 4,215.80 : x
  2. Step 2: Convert to fraction form
    11,613.80/17,415.66 = 4,215.80/x
  3. Step 3: Cross multiply
    11,613.80x = 17,415.66 × 4,215.80
  4. Step 4: Simplify right side
    11,613.80x = 73,420,939.43
  5. Step 5: Solve for x
    x = 73,420,939.43/11,613.80
  6. Step 6: Final answer
    x = 6,321.87

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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.