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Finding the Fourth Proportional to 11,235.70, 16,840.43 and 8,453.44

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Solution

The fourth proportional to 11,235.70, 16,840.43 and 8,453.44 is: 12,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.70 : 16,840.43 = 8,453.44 : x
  2. Step 2: Convert to fraction form
    11,235.70/16,840.43 = 8,453.44/x
  3. Step 3: Cross multiply
    11,235.70x = 16,840.43 × 8,453.44
  4. Step 4: Simplify right side
    11,235.70x = 142,359,438.11
  5. Step 5: Solve for x
    x = 142,359,438.11/11,235.70
  6. Step 6: Final answer
    x = 12,670.28

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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.