Home / 13,187.96-19,789.50-5,396.84

Finding the Fourth Proportional to 13,187.96, 19,789.50 and 5,396.84

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Solution

The fourth proportional to 13,187.96, 19,789.50 and 5,396.84 is: 8,098.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.96 : 19,789.50 = 5,396.84 : x
  2. Step 2: Convert to fraction form
    13,187.96/19,789.50 = 5,396.84/x
  3. Step 3: Cross multiply
    13,187.96x = 19,789.50 × 5,396.84
  4. Step 4: Simplify right side
    13,187.96x = 106,800,765.18
  5. Step 5: Solve for x
    x = 106,800,765.18/13,187.96
  6. Step 6: Final answer
    x = 8,098.35

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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.