Home / 13,912.31-19,195.25-7,942.79

Finding the Fourth Proportional to 13,912.31, 19,195.25 and 7,942.79

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Solution

The fourth proportional to 13,912.31, 19,195.25 and 7,942.79 is: 10,958.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.31 : 19,195.25 = 7,942.79 : x
  2. Step 2: Convert to fraction form
    13,912.31/19,195.25 = 7,942.79/x
  3. Step 3: Cross multiply
    13,912.31x = 19,195.25 × 7,942.79
  4. Step 4: Simplify right side
    13,912.31x = 152,463,704.06
  5. Step 5: Solve for x
    x = 152,463,704.06/13,912.31
  6. Step 6: Final answer
    x = 10,958.91

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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.