Home / 11,409.75-15,745.46-6,441.75

Finding the Fourth Proportional to 11,409.75, 15,745.46 and 6,441.75

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Solution

The fourth proportional to 11,409.75, 15,745.46 and 6,441.75 is: 8,889.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.75 : 15,745.46 = 6,441.75 : x
  2. Step 2: Convert to fraction form
    11,409.75/15,745.46 = 6,441.75/x
  3. Step 3: Cross multiply
    11,409.75x = 15,745.46 × 6,441.75
  4. Step 4: Simplify right side
    11,409.75x = 101,428,284.75
  5. Step 5: Solve for x
    x = 101,428,284.75/11,409.75
  6. Step 6: Final answer
    x = 8,889.62

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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.