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Finding the Fourth Proportional to 13,169.74, 18,162.48 and 7,862.62

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Solution

The fourth proportional to 13,169.74, 18,162.48 and 7,862.62 is: 10,843.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.74 : 18,162.48 = 7,862.62 : x
  2. Step 2: Convert to fraction form
    13,169.74/18,162.48 = 7,862.62/x
  3. Step 3: Cross multiply
    13,169.74x = 18,162.48 × 7,862.62
  4. Step 4: Simplify right side
    13,169.74x = 142,804,678.50
  5. Step 5: Solve for x
    x = 142,804,678.50/13,169.74
  6. Step 6: Final answer
    x = 10,843.39

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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.