Home / 11,613.11-17,408.94-4,215.78

Finding the Fourth Proportional to 11,613.11, 17,408.94 and 4,215.78

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Solution

The fourth proportional to 11,613.11, 17,408.94 and 4,215.78 is: 6,319.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.11 : 17,408.94 = 4,215.78 : x
  2. Step 2: Convert to fraction form
    11,613.11/17,408.94 = 4,215.78/x
  3. Step 3: Cross multiply
    11,613.11x = 17,408.94 × 4,215.78
  4. Step 4: Simplify right side
    11,613.11x = 73,392,261.07
  5. Step 5: Solve for x
    x = 73,392,261.07/11,613.11
  6. Step 6: Final answer
    x = 6,319.78

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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.