Home / 11,868.87-16,379.01-6,831.25

Finding the Fourth Proportional to 11,868.87, 16,379.01 and 6,831.25

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Solution

The fourth proportional to 11,868.87, 16,379.01 and 6,831.25 is: 9,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.87 : 16,379.01 = 6,831.25 : x
  2. Step 2: Convert to fraction form
    11,868.87/16,379.01 = 6,831.25/x
  3. Step 3: Cross multiply
    11,868.87x = 16,379.01 × 6,831.25
  4. Step 4: Simplify right side
    11,868.87x = 111,889,112.06
  5. Step 5: Solve for x
    x = 111,889,112.06/11,868.87
  6. Step 6: Final answer
    x = 9,427.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.