Home / 12,388.79-18,583.19-3,623.71

Finding the Fourth Proportional to 12,388.79, 18,583.19 and 3,623.71

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Solution

The fourth proportional to 12,388.79, 18,583.19 and 3,623.71 is: 5,435.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.79 : 18,583.19 = 3,623.71 : x
  2. Step 2: Convert to fraction form
    12,388.79/18,583.19 = 3,623.71/x
  3. Step 3: Cross multiply
    12,388.79x = 18,583.19 × 3,623.71
  4. Step 4: Simplify right side
    12,388.79x = 67,340,073.32
  5. Step 5: Solve for x
    x = 67,340,073.32/12,388.79
  6. Step 6: Final answer
    x = 5,435.57

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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.