Home / 11,907-17,868.70-4,115.81

Finding the Fourth Proportional to 11,907, 17,868.70 and 4,115.81

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Solution

The fourth proportional to 11,907, 17,868.70 and 4,115.81 is: 6,176.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,907 : 17,868.70 = 4,115.81 : x
  2. Step 2: Convert to fraction form
    11,907/17,868.70 = 4,115.81/x
  3. Step 3: Cross multiply
    11,907x = 17,868.70 × 4,115.81
  4. Step 4: Simplify right side
    11,907x = 73,544,223.96
  5. Step 5: Solve for x
    x = 73,544,223.96/11,907
  6. Step 6: Final answer
    x = 6,176.55

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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.