Home / 12,356.70-18,537.93-3,591.78

Finding the Fourth Proportional to 12,356.70, 18,537.93 and 3,591.78

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Solution

The fourth proportional to 12,356.70, 18,537.93 and 3,591.78 is: 5,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.70 : 18,537.93 = 3,591.78 : x
  2. Step 2: Convert to fraction form
    12,356.70/18,537.93 = 3,591.78/x
  3. Step 3: Cross multiply
    12,356.70x = 18,537.93 × 3,591.78
  4. Step 4: Simplify right side
    12,356.70x = 66,584,166.22
  5. Step 5: Solve for x
    x = 66,584,166.22/12,356.70
  6. Step 6: Final answer
    x = 5,388.51

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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.