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Finding the Fourth Proportional to 28,861, 39,828.18 and 16,285.48

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Solution

The fourth proportional to 28,861, 39,828.18 and 16,285.48 is: 22,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861 : 39,828.18 = 16,285.48 : x
  2. Step 2: Convert to fraction form
    28,861/39,828.18 = 16,285.48/x
  3. Step 3: Cross multiply
    28,861x = 39,828.18 × 16,285.48
  4. Step 4: Simplify right side
    28,861x = 648,621,028.83
  5. Step 5: Solve for x
    x = 648,621,028.83/28,861
  6. Step 6: Final answer
    x = 22,473.96

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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.