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Finding the Fourth Proportional to 43,395.68, 65,092.82 and 13,813.09

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Solution

The fourth proportional to 43,395.68, 65,092.82 and 13,813.09 is: 20,719.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,395.68 : 65,092.82 = 13,813.09 : x
  2. Step 2: Convert to fraction form
    43,395.68/65,092.82 = 13,813.09/x
  3. Step 3: Cross multiply
    43,395.68x = 65,092.82 × 13,813.09
  4. Step 4: Simplify right side
    43,395.68x = 899,132,749.22
  5. Step 5: Solve for x
    x = 899,132,749.22/43,395.68
  6. Step 6: Final answer
    x = 20,719.41

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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.