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Finding the Fourth Proportional to 16,818.80, 25,233.60 and 7,455.20

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Solution

The fourth proportional to 16,818.80, 25,233.60 and 7,455.20 is: 11,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818.80 : 25,233.60 = 7,455.20 : x
  2. Step 2: Convert to fraction form
    16,818.80/25,233.60 = 7,455.20/x
  3. Step 3: Cross multiply
    16,818.80x = 25,233.60 × 7,455.20
  4. Step 4: Simplify right side
    16,818.80x = 188,121,534.72
  5. Step 5: Solve for x
    x = 188,121,534.72/16,818.80
  6. Step 6: Final answer
    x = 11,185.19

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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.