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Finding the Fourth Proportional to 28,743, 39,667.62 and 16,168.68

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Solution

The fourth proportional to 28,743, 39,667.62 and 16,168.68 is: 22,314.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,743 : 39,667.62 = 16,168.68 : x
  2. Step 2: Convert to fraction form
    28,743/39,667.62 = 16,168.68/x
  3. Step 3: Cross multiply
    28,743x = 39,667.62 × 16,168.68
  4. Step 4: Simplify right side
    28,743x = 641,373,054.14
  5. Step 5: Solve for x
    x = 641,373,054.14/28,743
  6. Step 6: Final answer
    x = 22,314.06

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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.