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Finding the Fourth Proportional to 18,803.60, 28,205.40 and 16,576.40

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Solution

The fourth proportional to 18,803.60, 28,205.40 and 16,576.40 is: 24,864.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.60 : 28,205.40 = 16,576.40 : x
  2. Step 2: Convert to fraction form
    18,803.60/28,205.40 = 16,576.40/x
  3. Step 3: Cross multiply
    18,803.60x = 28,205.40 × 16,576.40
  4. Step 4: Simplify right side
    18,803.60x = 467,543,992.56
  5. Step 5: Solve for x
    x = 467,543,992.56/18,803.60
  6. Step 6: Final answer
    x = 24,864.60

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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.