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Finding the Fourth Proportional to 11,234.40, 16,840.80 and 8,734.20

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Solution

The fourth proportional to 11,234.40, 16,840.80 and 8,734.20 is: 13,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,234.40 : 16,840.80 = 8,734.20 : x
  2. Step 2: Convert to fraction form
    11,234.40/16,840.80 = 8,734.20/x
  3. Step 3: Cross multiply
    11,234.40x = 16,840.80 × 8,734.20
  4. Step 4: Simplify right side
    11,234.40x = 147,090,915.36
  5. Step 5: Solve for x
    x = 147,090,915.36/11,234.40
  6. Step 6: Final answer
    x = 13,092.90

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1.5x scale

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.