Home / 11,879.81-17,821.73-4,485.32

Finding the Fourth Proportional to 11,879.81, 17,821.73 and 4,485.32

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Solution

The fourth proportional to 11,879.81, 17,821.73 and 4,485.32 is: 6,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.81 : 17,821.73 = 4,485.32 : x
  2. Step 2: Convert to fraction form
    11,879.81/17,821.73 = 4,485.32/x
  3. Step 3: Cross multiply
    11,879.81x = 17,821.73 × 4,485.32
  4. Step 4: Simplify right side
    11,879.81x = 79,936,084.11
  5. Step 5: Solve for x
    x = 79,936,084.11/11,879.81
  6. Step 6: Final answer
    x = 6,728.74

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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.