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Finding the Fourth Proportional to 11,187.35, 16,762.80 and 8,234.90

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Solution

The fourth proportional to 11,187.35, 16,762.80 and 8,234.90 is: 12,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.35 : 16,762.80 = 8,234.90 : x
  2. Step 2: Convert to fraction form
    11,187.35/16,762.80 = 8,234.90/x
  3. Step 3: Cross multiply
    11,187.35x = 16,762.80 × 8,234.90
  4. Step 4: Simplify right side
    11,187.35x = 138,039,981.72
  5. Step 5: Solve for x
    x = 138,039,981.72/11,187.35
  6. Step 6: Final answer
    x = 12,338.93

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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.