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Finding the Fourth Proportional to 11,235.92, 16,840.76 and 8,453.65

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Solution

The fourth proportional to 11,235.92, 16,840.76 and 8,453.65 is: 12,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.92 : 16,840.76 = 8,453.65 : x
  2. Step 2: Convert to fraction form
    11,235.92/16,840.76 = 8,453.65/x
  3. Step 3: Cross multiply
    11,235.92x = 16,840.76 × 8,453.65
  4. Step 4: Simplify right side
    11,235.92x = 142,365,890.77
  5. Step 5: Solve for x
    x = 142,365,890.77/11,235.92
  6. Step 6: Final answer
    x = 12,670.60

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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.