Home / 12,115.59-18,172.87-3,795.42

Finding the Fourth Proportional to 12,115.59, 18,172.87 and 3,795.42

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Solution

The fourth proportional to 12,115.59, 18,172.87 and 3,795.42 is: 5,692.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.59 : 18,172.87 = 3,795.42 : x
  2. Step 2: Convert to fraction form
    12,115.59/18,172.87 = 3,795.42/x
  3. Step 3: Cross multiply
    12,115.59x = 18,172.87 × 3,795.42
  4. Step 4: Simplify right side
    12,115.59x = 68,973,754.26
  5. Step 5: Solve for x
    x = 68,973,754.26/12,115.59
  6. Step 6: Final answer
    x = 5,692.97

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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.