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Finding the Fourth Proportional to 13,751.35, 18,976.89 and 7,463.71

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Solution

The fourth proportional to 13,751.35, 18,976.89 and 7,463.71 is: 10,299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.35 : 18,976.89 = 7,463.71 : x
  2. Step 2: Convert to fraction form
    13,751.35/18,976.89 = 7,463.71/x
  3. Step 3: Cross multiply
    13,751.35x = 18,976.89 × 7,463.71
  4. Step 4: Simplify right side
    13,751.35x = 141,638,003.66
  5. Step 5: Solve for x
    x = 141,638,003.66/13,751.35
  6. Step 6: Final answer
    x = 10,299.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.