Home / 18,982.41-28,455.36-12,744.15

Finding the Fourth Proportional to 18,982.41, 28,455.36 and 12,744.15

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Solution

The fourth proportional to 18,982.41, 28,455.36 and 12,744.15 is: 19,103.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.41 : 28,455.36 = 12,744.15 : x
  2. Step 2: Convert to fraction form
    18,982.41/28,455.36 = 12,744.15/x
  3. Step 3: Cross multiply
    18,982.41x = 28,455.36 × 12,744.15
  4. Step 4: Simplify right side
    18,982.41x = 362,639,376.14
  5. Step 5: Solve for x
    x = 362,639,376.14/18,982.41
  6. Step 6: Final answer
    x = 19,103.97

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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.