Home / 18,453.15-25,431.57-13,408.54

Finding the Fourth Proportional to 18,453.15, 25,431.57 and 13,408.54

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Solution

The fourth proportional to 18,453.15, 25,431.57 and 13,408.54 is: 18,479.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.15 : 25,431.57 = 13,408.54 : x
  2. Step 2: Convert to fraction form
    18,453.15/25,431.57 = 13,408.54/x
  3. Step 3: Cross multiply
    18,453.15x = 25,431.57 × 13,408.54
  4. Step 4: Simplify right side
    18,453.15x = 341,000,160.03
  5. Step 5: Solve for x
    x = 341,000,160.03/18,453.15
  6. Step 6: Final answer
    x = 18,479.24

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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.