Home / 11,993.85-17,964.63-9,890.28

Finding the Fourth Proportional to 11,993.85, 17,964.63 and 9,890.28

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Solution

The fourth proportional to 11,993.85, 17,964.63 and 9,890.28 is: 14,813.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.85 : 17,964.63 = 9,890.28 : x
  2. Step 2: Convert to fraction form
    11,993.85/17,964.63 = 9,890.28/x
  3. Step 3: Cross multiply
    11,993.85x = 17,964.63 × 9,890.28
  4. Step 4: Simplify right side
    11,993.85x = 177,675,220.80
  5. Step 5: Solve for x
    x = 177,675,220.80/11,993.85
  6. Step 6: Final answer
    x = 14,813.86

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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.