Home / 11,918.72-17,866.88-4,015.70

Finding the Fourth Proportional to 11,918.72, 17,866.88 and 4,015.70

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Solution

The fourth proportional to 11,918.72, 17,866.88 and 4,015.70 is: 6,019.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.72 : 17,866.88 = 4,015.70 : x
  2. Step 2: Convert to fraction form
    11,918.72/17,866.88 = 4,015.70/x
  3. Step 3: Cross multiply
    11,918.72x = 17,866.88 × 4,015.70
  4. Step 4: Simplify right side
    11,918.72x = 71,747,920.60
  5. Step 5: Solve for x
    x = 71,747,920.60/11,918.72
  6. Step 6: Final answer
    x = 6,019.77

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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.