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Finding the Fourth Proportional to 9,964.70, 14,947.05 and 7,469.90

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Solution

The fourth proportional to 9,964.70, 14,947.05 and 7,469.90 is: 11,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,964.70 : 14,947.05 = 7,469.90 : x
  2. Step 2: Convert to fraction form
    9,964.70/14,947.05 = 7,469.90/x
  3. Step 3: Cross multiply
    9,964.70x = 14,947.05 × 7,469.90
  4. Step 4: Simplify right side
    9,964.70x = 111,652,968.80
  5. Step 5: Solve for x
    x = 111,652,968.80/9,964.70
  6. Step 6: Final answer
    x = 11,204.85

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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.