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Finding the Fourth Proportional to 14,511.86, 21,766.87 and 8,664.06

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Solution

The fourth proportional to 14,511.86, 21,766.87 and 8,664.06 is: 12,995.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,511.86 : 21,766.87 = 8,664.06 : x
  2. Step 2: Convert to fraction form
    14,511.86/21,766.87 = 8,664.06/x
  3. Step 3: Cross multiply
    14,511.86x = 21,766.87 × 8,664.06
  4. Step 4: Simplify right side
    14,511.86x = 188,589,467.69
  5. Step 5: Solve for x
    x = 188,589,467.69/14,511.86
  6. Step 6: Final answer
    x = 12,995.54

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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.