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Finding the Fourth Proportional to 11,810.40, 17,744.40 and 8,894.40

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Solution

The fourth proportional to 11,810.40, 17,744.40 and 8,894.40 is: 13,363.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,810.40 : 17,744.40 = 8,894.40 : x
  2. Step 2: Convert to fraction form
    11,810.40/17,744.40 = 8,894.40/x
  3. Step 3: Cross multiply
    11,810.40x = 17,744.40 × 8,894.40
  4. Step 4: Simplify right side
    11,810.40x = 157,825,791.36
  5. Step 5: Solve for x
    x = 157,825,791.36/11,810.40
  6. Step 6: Final answer
    x = 13,363.29

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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.