Home / 12,664.20-19,028.70-11,238.60

Finding the Fourth Proportional to 12,664.20, 19,028.70 and 11,238.60

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Solution

The fourth proportional to 12,664.20, 19,028.70 and 11,238.60 is: 16,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.20 : 19,028.70 = 11,238.60 : x
  2. Step 2: Convert to fraction form
    12,664.20/19,028.70 = 11,238.60/x
  3. Step 3: Cross multiply
    12,664.20x = 19,028.70 × 11,238.60
  4. Step 4: Simplify right side
    12,664.20x = 213,855,947.82
  5. Step 5: Solve for x
    x = 213,855,947.82/12,664.20
  6. Step 6: Final answer
    x = 16,886.65

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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.