Home / 12,647.69-18,971.08-3,882.38

Finding the Fourth Proportional to 12,647.69, 18,971.08 and 3,882.38

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Solution

The fourth proportional to 12,647.69, 18,971.08 and 3,882.38 is: 5,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.69 : 18,971.08 = 3,882.38 : x
  2. Step 2: Convert to fraction form
    12,647.69/18,971.08 = 3,882.38/x
  3. Step 3: Cross multiply
    12,647.69x = 18,971.08 × 3,882.38
  4. Step 4: Simplify right side
    12,647.69x = 73,652,837.01
  5. Step 5: Solve for x
    x = 73,652,837.01/12,647.69
  6. Step 6: Final answer
    x = 5,823.42

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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.