Home / 12,756.54-19,134.78-3,396.57

Finding the Fourth Proportional to 12,756.54, 19,134.78 and 3,396.57

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Solution

The fourth proportional to 12,756.54, 19,134.78 and 3,396.57 is: 5,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.54 : 19,134.78 = 3,396.57 : x
  2. Step 2: Convert to fraction form
    12,756.54/19,134.78 = 3,396.57/x
  3. Step 3: Cross multiply
    12,756.54x = 19,134.78 × 3,396.57
  4. Step 4: Simplify right side
    12,756.54x = 64,992,619.70
  5. Step 5: Solve for x
    x = 64,992,619.70/12,756.54
  6. Step 6: Final answer
    x = 5,094.85

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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.