Home / 12,768.64-19,154.91-3,409.39

Finding the Fourth Proportional to 12,768.64, 19,154.91 and 3,409.39

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Solution

The fourth proportional to 12,768.64, 19,154.91 and 3,409.39 is: 5,114.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.64 : 19,154.91 = 3,409.39 : x
  2. Step 2: Convert to fraction form
    12,768.64/19,154.91 = 3,409.39/x
  3. Step 3: Cross multiply
    12,768.64x = 19,154.91 × 3,409.39
  4. Step 4: Simplify right side
    12,768.64x = 65,306,595.33
  5. Step 5: Solve for x
    x = 65,306,595.33/12,768.64
  6. Step 6: Final answer
    x = 5,114.61

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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.