Home / 11,107.68-15,325.92-6,912.96

Finding the Fourth Proportional to 11,107.68, 15,325.92 and 6,912.96

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Solution

The fourth proportional to 11,107.68, 15,325.92 and 6,912.96 is: 9,538.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.68 : 15,325.92 = 6,912.96 : x
  2. Step 2: Convert to fraction form
    11,107.68/15,325.92 = 6,912.96/x
  3. Step 3: Cross multiply
    11,107.68x = 15,325.92 × 6,912.96
  4. Step 4: Simplify right side
    11,107.68x = 105,947,471.92
  5. Step 5: Solve for x
    x = 105,947,471.92/11,107.68
  6. Step 6: Final answer
    x = 9,538.22

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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.