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Finding the Fourth Proportional to 9,930.50, 14,895.76 and 4,458.50

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Solution

The fourth proportional to 9,930.50, 14,895.76 and 4,458.50 is: 6,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.50 : 14,895.76 = 4,458.50 : x
  2. Step 2: Convert to fraction form
    9,930.50/14,895.76 = 4,458.50/x
  3. Step 3: Cross multiply
    9,930.50x = 14,895.76 × 4,458.50
  4. Step 4: Simplify right side
    9,930.50x = 66,412,745.96
  5. Step 5: Solve for x
    x = 66,412,745.96/9,930.50
  6. Step 6: Final answer
    x = 6,687.75

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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.