Home / 11,613.69-17,422.83-4,218.39

Finding the Fourth Proportional to 11,613.69, 17,422.83 and 4,218.39

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Solution

The fourth proportional to 11,613.69, 17,422.83 and 4,218.39 is: 6,328.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.69 : 17,422.83 = 4,218.39 : x
  2. Step 2: Convert to fraction form
    11,613.69/17,422.83 = 4,218.39/x
  3. Step 3: Cross multiply
    11,613.69x = 17,422.83 × 4,218.39
  4. Step 4: Simplify right side
    11,613.69x = 73,496,291.84
  5. Step 5: Solve for x
    x = 73,496,291.84/11,613.69
  6. Step 6: Final answer
    x = 6,328.42

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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.