Home / 12,664.64-18,910.48-11,339.84

Finding the Fourth Proportional to 12,664.64, 18,910.48 and 11,339.84

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Solution

The fourth proportional to 12,664.64, 18,910.48 and 11,339.84 is: 16,932.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.64 : 18,910.48 = 11,339.84 : x
  2. Step 2: Convert to fraction form
    12,664.64/18,910.48 = 11,339.84/x
  3. Step 3: Cross multiply
    12,664.64x = 18,910.48 × 11,339.84
  4. Step 4: Simplify right side
    12,664.64x = 214,441,817.52
  5. Step 5: Solve for x
    x = 214,441,817.52/12,664.64
  6. Step 6: Final answer
    x = 16,932.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.