Home / 13,408.72-18,507.62-8,369.90

Finding the Fourth Proportional to 13,408.72, 18,507.62 and 8,369.90

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Solution

The fourth proportional to 13,408.72, 18,507.62 and 8,369.90 is: 11,552.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.72 : 18,507.62 = 8,369.90 : x
  2. Step 2: Convert to fraction form
    13,408.72/18,507.62 = 8,369.90/x
  3. Step 3: Cross multiply
    13,408.72x = 18,507.62 × 8,369.90
  4. Step 4: Simplify right side
    13,408.72x = 154,907,006.37
  5. Step 5: Solve for x
    x = 154,907,006.37/13,408.72
  6. Step 6: Final answer
    x = 11,552.71

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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.