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Finding the Fourth Proportional to 18,259.91, 27,393.96 and 5,780.68

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Solution

The fourth proportional to 18,259.91, 27,393.96 and 5,780.68 is: 8,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.91 : 27,393.96 = 5,780.68 : x
  2. Step 2: Convert to fraction form
    18,259.91/27,393.96 = 5,780.68/x
  3. Step 3: Cross multiply
    18,259.91x = 27,393.96 × 5,780.68
  4. Step 4: Simplify right side
    18,259.91x = 158,355,550.82
  5. Step 5: Solve for x
    x = 158,355,550.82/18,259.91
  6. Step 6: Final answer
    x = 8,672.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.