Home / 12,002.78-18,007.21-3,683.22

Finding the Fourth Proportional to 12,002.78, 18,007.21 and 3,683.22

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Solution

The fourth proportional to 12,002.78, 18,007.21 and 3,683.22 is: 5,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,002.78 : 18,007.21 = 3,683.22 : x
  2. Step 2: Convert to fraction form
    12,002.78/18,007.21 = 3,683.22/x
  3. Step 3: Cross multiply
    12,002.78x = 18,007.21 × 3,683.22
  4. Step 4: Simplify right side
    12,002.78x = 66,324,554.38
  5. Step 5: Solve for x
    x = 66,324,554.38/12,002.78
  6. Step 6: Final answer
    x = 5,525.76

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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.