Home / 18,390.36-27,586.42-5,243.64

Finding the Fourth Proportional to 18,390.36, 27,586.42 and 5,243.64

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Solution

The fourth proportional to 18,390.36, 27,586.42 and 5,243.64 is: 7,865.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.36 : 27,586.42 = 5,243.64 : x
  2. Step 2: Convert to fraction form
    18,390.36/27,586.42 = 5,243.64/x
  3. Step 3: Cross multiply
    18,390.36x = 27,586.42 × 5,243.64
  4. Step 4: Simplify right side
    18,390.36x = 144,653,255.37
  5. Step 5: Solve for x
    x = 144,653,255.37/18,390.36
  6. Step 6: Final answer
    x = 7,865.71

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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.