Home / 12,575.79-18,866.44-3,811.39

Finding the Fourth Proportional to 12,575.79, 18,866.44 and 3,811.39

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Solution

The fourth proportional to 12,575.79, 18,866.44 and 3,811.39 is: 5,717.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,575.79 : 18,866.44 = 3,811.39 : x
  2. Step 2: Convert to fraction form
    12,575.79/18,866.44 = 3,811.39/x
  3. Step 3: Cross multiply
    12,575.79x = 18,866.44 × 3,811.39
  4. Step 4: Simplify right side
    12,575.79x = 71,907,318.35
  5. Step 5: Solve for x
    x = 71,907,318.35/12,575.79
  6. Step 6: Final answer
    x = 5,717.92

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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.