Home / 12,408.88-18,616.56-4,090.16

Finding the Fourth Proportional to 12,408.88, 18,616.56 and 4,090.16

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Solution

The fourth proportional to 12,408.88, 18,616.56 and 4,090.16 is: 6,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.88 : 18,616.56 = 4,090.16 : x
  2. Step 2: Convert to fraction form
    12,408.88/18,616.56 = 4,090.16/x
  3. Step 3: Cross multiply
    12,408.88x = 18,616.56 × 4,090.16
  4. Step 4: Simplify right side
    12,408.88x = 76,144,709.05
  5. Step 5: Solve for x
    x = 76,144,709.05/12,408.88
  6. Step 6: Final answer
    x = 6,136.31

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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.