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Finding the Fourth Proportional to 11,379.44, 15,702.98 and 6,343.49

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Solution

The fourth proportional to 11,379.44, 15,702.98 and 6,343.49 is: 8,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.44 : 15,702.98 = 6,343.49 : x
  2. Step 2: Convert to fraction form
    11,379.44/15,702.98 = 6,343.49/x
  3. Step 3: Cross multiply
    11,379.44x = 15,702.98 × 6,343.49
  4. Step 4: Simplify right side
    11,379.44x = 99,611,704.14
  5. Step 5: Solve for x
    x = 99,611,704.14/11,379.44
  6. Step 6: Final answer
    x = 8,753.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.