Home / 13,020.38-19,533.87-3,786.38

Finding the Fourth Proportional to 13,020.38, 19,533.87 and 3,786.38

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Solution

The fourth proportional to 13,020.38, 19,533.87 and 3,786.38 is: 5,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.38 : 19,533.87 = 3,786.38 : x
  2. Step 2: Convert to fraction form
    13,020.38/19,533.87 = 3,786.38/x
  3. Step 3: Cross multiply
    13,020.38x = 19,533.87 × 3,786.38
  4. Step 4: Simplify right side
    13,020.38x = 73,962,557.02
  5. Step 5: Solve for x
    x = 73,962,557.02/13,020.38
  6. Step 6: Final answer
    x = 5,680.52

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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.