Home / 54,939.24-82,413.72-19,879.20

Finding the Fourth Proportional to 54,939.24, 82,413.72 and 19,879.20

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Solution

The fourth proportional to 54,939.24, 82,413.72 and 19,879.20 is: 29,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,939.24 : 82,413.72 = 19,879.20 : x
  2. Step 2: Convert to fraction form
    54,939.24/82,413.72 = 19,879.20/x
  3. Step 3: Cross multiply
    54,939.24x = 82,413.72 × 19,879.20
  4. Step 4: Simplify right side
    54,939.24x = 1,638,318,822.62
  5. Step 5: Solve for x
    x = 1,638,318,822.62/54,939.24
  6. Step 6: Final answer
    x = 29,820.56

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1.5x scale

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.