Home / 12,942.88-19,382.44-7,382.48

Finding the Fourth Proportional to 12,942.88, 19,382.44 and 7,382.48

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Solution

The fourth proportional to 12,942.88, 19,382.44 and 7,382.48 is: 11,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.88 : 19,382.44 = 7,382.48 : x
  2. Step 2: Convert to fraction form
    12,942.88/19,382.44 = 7,382.48/x
  3. Step 3: Cross multiply
    12,942.88x = 19,382.44 × 7,382.48
  4. Step 4: Simplify right side
    12,942.88x = 143,090,475.65
  5. Step 5: Solve for x
    x = 143,090,475.65/12,942.88
  6. Step 6: Final answer
    x = 11,055.54

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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.