Home / 12,858.35-19,289.37-3,974.45

Finding the Fourth Proportional to 12,858.35, 19,289.37 and 3,974.45

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Solution

The fourth proportional to 12,858.35, 19,289.37 and 3,974.45 is: 5,962.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.35 : 19,289.37 = 3,974.45 : x
  2. Step 2: Convert to fraction form
    12,858.35/19,289.37 = 3,974.45/x
  3. Step 3: Cross multiply
    12,858.35x = 19,289.37 × 3,974.45
  4. Step 4: Simplify right side
    12,858.35x = 76,664,540.15
  5. Step 5: Solve for x
    x = 76,664,540.15/12,858.35
  6. Step 6: Final answer
    x = 5,962.24

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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.