Home / 12,240.91-16,906.39-8,664.86

Finding the Fourth Proportional to 12,240.91, 16,906.39 and 8,664.86

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Solution

The fourth proportional to 12,240.91, 16,906.39 and 8,664.86 is: 11,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.91 : 16,906.39 = 8,664.86 : x
  2. Step 2: Convert to fraction form
    12,240.91/16,906.39 = 8,664.86/x
  3. Step 3: Cross multiply
    12,240.91x = 16,906.39 × 8,664.86
  4. Step 4: Simplify right side
    12,240.91x = 146,491,459.13
  5. Step 5: Solve for x
    x = 146,491,459.13/12,240.91
  6. Step 6: Final answer
    x = 11,967.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.