Home / 18,400.53-25,408.98-13,676.61

Finding the Fourth Proportional to 18,400.53, 25,408.98 and 13,676.61

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Solution

The fourth proportional to 18,400.53, 25,408.98 and 13,676.61 is: 18,885.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.53 : 25,408.98 = 13,676.61 : x
  2. Step 2: Convert to fraction form
    18,400.53/25,408.98 = 13,676.61/x
  3. Step 3: Cross multiply
    18,400.53x = 25,408.98 × 13,676.61
  4. Step 4: Simplify right side
    18,400.53x = 347,508,709.96
  5. Step 5: Solve for x
    x = 347,508,709.96/18,400.53
  6. Step 6: Final answer
    x = 18,885.80

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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.