Home / 12,939.96-19,413.18-4,174.68

Finding the Fourth Proportional to 12,939.96, 19,413.18 and 4,174.68

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Solution

The fourth proportional to 12,939.96, 19,413.18 and 4,174.68 is: 6,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.96 : 19,413.18 = 4,174.68 : x
  2. Step 2: Convert to fraction form
    12,939.96/19,413.18 = 4,174.68/x
  3. Step 3: Cross multiply
    12,939.96x = 19,413.18 × 4,174.68
  4. Step 4: Simplify right side
    12,939.96x = 81,043,814.28
  5. Step 5: Solve for x
    x = 81,043,814.28/12,939.96
  6. Step 6: Final answer
    x = 6,263.07

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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.