Home / 12,664.20-19,000.62-11,221.32

Finding the Fourth Proportional to 12,664.20, 19,000.62 and 11,221.32

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Solution

The fourth proportional to 12,664.20, 19,000.62 and 11,221.32 is: 16,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.20 : 19,000.62 = 11,221.32 : x
  2. Step 2: Convert to fraction form
    12,664.20/19,000.62 = 11,221.32/x
  3. Step 3: Cross multiply
    12,664.20x = 19,000.62 × 11,221.32
  4. Step 4: Simplify right side
    12,664.20x = 213,212,037.22
  5. Step 5: Solve for x
    x = 213,212,037.22/12,664.20
  6. Step 6: Final answer
    x = 16,835.81

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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.