Home / 11,639.09-17,458.80-3,319.11

Finding the Fourth Proportional to 11,639.09, 17,458.80 and 3,319.11

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Solution

The fourth proportional to 11,639.09, 17,458.80 and 3,319.11 is: 4,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.09 : 17,458.80 = 3,319.11 : x
  2. Step 2: Convert to fraction form
    11,639.09/17,458.80 = 3,319.11/x
  3. Step 3: Cross multiply
    11,639.09x = 17,458.80 × 3,319.11
  4. Step 4: Simplify right side
    11,639.09x = 57,947,661.07
  5. Step 5: Solve for x
    x = 57,947,661.07/11,639.09
  6. Step 6: Final answer
    x = 4,978.71

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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.