Home / 12,115.62-18,172.08-3,795.30

Finding the Fourth Proportional to 12,115.62, 18,172.08 and 3,795.30

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Solution

The fourth proportional to 12,115.62, 18,172.08 and 3,795.30 is: 5,692.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.62 : 18,172.08 = 3,795.30 : x
  2. Step 2: Convert to fraction form
    12,115.62/18,172.08 = 3,795.30/x
  3. Step 3: Cross multiply
    12,115.62x = 18,172.08 × 3,795.30
  4. Step 4: Simplify right side
    12,115.62x = 68,968,495.22
  5. Step 5: Solve for x
    x = 68,968,495.22/12,115.62
  6. Step 6: Final answer
    x = 5,692.53

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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.