Home / 12,287.64-18,433.62-3,969.48

Finding the Fourth Proportional to 12,287.64, 18,433.62 and 3,969.48

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Solution

The fourth proportional to 12,287.64, 18,433.62 and 3,969.48 is: 5,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.64 : 18,433.62 = 3,969.48 : x
  2. Step 2: Convert to fraction form
    12,287.64/18,433.62 = 3,969.48/x
  3. Step 3: Cross multiply
    12,287.64x = 18,433.62 × 3,969.48
  4. Step 4: Simplify right side
    12,287.64x = 73,171,885.92
  5. Step 5: Solve for x
    x = 73,171,885.92/12,287.64
  6. Step 6: Final answer
    x = 5,954.92

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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.