Home / 11,867.81-17,815.46-6,940.98

Finding the Fourth Proportional to 11,867.81, 17,815.46 and 6,940.98

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Solution

The fourth proportional to 11,867.81, 17,815.46 and 6,940.98 is: 10,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,867.81 : 17,815.46 = 6,940.98 : x
  2. Step 2: Convert to fraction form
    11,867.81/17,815.46 = 6,940.98/x
  3. Step 3: Cross multiply
    11,867.81x = 17,815.46 × 6,940.98
  4. Step 4: Simplify right side
    11,867.81x = 123,656,716.85
  5. Step 5: Solve for x
    x = 123,656,716.85/11,867.81
  6. Step 6: Final answer
    x = 10,419.51

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1.5x scale

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.