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Finding the Fourth Proportional to 13,301.80, 19,949.10 and 3,941.80

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Solution

The fourth proportional to 13,301.80, 19,949.10 and 3,941.80 is: 5,911.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,301.80 : 19,949.10 = 3,941.80 : x
  2. Step 2: Convert to fraction form
    13,301.80/19,949.10 = 3,941.80/x
  3. Step 3: Cross multiply
    13,301.80x = 19,949.10 × 3,941.80
  4. Step 4: Simplify right side
    13,301.80x = 78,635,362.38
  5. Step 5: Solve for x
    x = 78,635,362.38/13,301.80
  6. Step 6: Final answer
    x = 5,911.63

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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.