Home / 11,639.45-17,459.84-3,318.83

Finding the Fourth Proportional to 11,639.45, 17,459.84 and 3,318.83

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Solution

The fourth proportional to 11,639.45, 17,459.84 and 3,318.83 is: 4,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.45 : 17,459.84 = 3,318.83 : x
  2. Step 2: Convert to fraction form
    11,639.45/17,459.84 = 3,318.83/x
  3. Step 3: Cross multiply
    11,639.45x = 17,459.84 × 3,318.83
  4. Step 4: Simplify right side
    11,639.45x = 57,946,136.89
  5. Step 5: Solve for x
    x = 57,946,136.89/11,639.45
  6. Step 6: Final answer
    x = 4,978.43

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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.