Home / 12,338.45-18,508.85-3,453.79

Finding the Fourth Proportional to 12,338.45, 18,508.85 and 3,453.79

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Solution

The fourth proportional to 12,338.45, 18,508.85 and 3,453.79 is: 5,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.45 : 18,508.85 = 3,453.79 : x
  2. Step 2: Convert to fraction form
    12,338.45/18,508.85 = 3,453.79/x
  3. Step 3: Cross multiply
    12,338.45x = 18,508.85 × 3,453.79
  4. Step 4: Simplify right side
    12,338.45x = 63,925,571.23
  5. Step 5: Solve for x
    x = 63,925,571.23/12,338.45
  6. Step 6: Final answer
    x = 5,181.01

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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.