Home / 12,936.38-19,413.68-5,147.01

Finding the Fourth Proportional to 12,936.38, 19,413.68 and 5,147.01

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Solution

The fourth proportional to 12,936.38, 19,413.68 and 5,147.01 is: 7,724.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.38 : 19,413.68 = 5,147.01 : x
  2. Step 2: Convert to fraction form
    12,936.38/19,413.68 = 5,147.01/x
  3. Step 3: Cross multiply
    12,936.38x = 19,413.68 × 5,147.01
  4. Step 4: Simplify right side
    12,936.38x = 99,922,379.36
  5. Step 5: Solve for x
    x = 99,922,379.36/12,936.38
  6. Step 6: Final answer
    x = 7,724.14

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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.