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Finding the Fourth Proportional to 18,907, 28,353.88 and 5,576.46

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Solution

The fourth proportional to 18,907, 28,353.88 and 5,576.46 is: 8,362.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907 : 28,353.88 = 5,576.46 : x
  2. Step 2: Convert to fraction form
    18,907/28,353.88 = 5,576.46/x
  3. Step 3: Cross multiply
    18,907x = 28,353.88 × 5,576.46
  4. Step 4: Simplify right side
    18,907x = 158,114,108.01
  5. Step 5: Solve for x
    x = 158,114,108.01/18,907
  6. Step 6: Final answer
    x = 8,362.73

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Why These Related Problems?

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