Home / 12,408.60-18,558.90-11,101.80

Finding the Fourth Proportional to 12,408.60, 18,558.90 and 11,101.80

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Solution

The fourth proportional to 12,408.60, 18,558.90 and 11,101.80 is: 16,604.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.60 : 18,558.90 = 11,101.80 : x
  2. Step 2: Convert to fraction form
    12,408.60/18,558.90 = 11,101.80/x
  3. Step 3: Cross multiply
    12,408.60x = 18,558.90 × 11,101.80
  4. Step 4: Simplify right side
    12,408.60x = 206,037,196.02
  5. Step 5: Solve for x
    x = 206,037,196.02/12,408.60
  6. Step 6: Final answer
    x = 16,604.39

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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.