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Finding the Fourth Proportional to 28,393.87, 39,183.01 and 15,648.24

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Solution

The fourth proportional to 28,393.87, 39,183.01 and 15,648.24 is: 21,594.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.87 : 39,183.01 = 15,648.24 : x
  2. Step 2: Convert to fraction form
    28,393.87/39,183.01 = 15,648.24/x
  3. Step 3: Cross multiply
    28,393.87x = 39,183.01 × 15,648.24
  4. Step 4: Simplify right side
    28,393.87x = 613,145,144.40
  5. Step 5: Solve for x
    x = 613,145,144.40/28,393.87
  6. Step 6: Final answer
    x = 21,594.28

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