Home / 12,394.37-17,118.18-8,408.57

Finding the Fourth Proportional to 12,394.37, 17,118.18 and 8,408.57

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Solution

The fourth proportional to 12,394.37, 17,118.18 and 8,408.57 is: 11,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,394.37 : 17,118.18 = 8,408.57 : x
  2. Step 2: Convert to fraction form
    12,394.37/17,118.18 = 8,408.57/x
  3. Step 3: Cross multiply
    12,394.37x = 17,118.18 × 8,408.57
  4. Step 4: Simplify right side
    12,394.37x = 143,939,329.21
  5. Step 5: Solve for x
    x = 143,939,329.21/12,394.37
  6. Step 6: Final answer
    x = 11,613.29

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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.