Home / 12,660.37-18,990.55-3,300.36

Finding the Fourth Proportional to 12,660.37, 18,990.55 and 3,300.36

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Solution

The fourth proportional to 12,660.37, 18,990.55 and 3,300.36 is: 4,950.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.37 : 18,990.55 = 3,300.36 : x
  2. Step 2: Convert to fraction form
    12,660.37/18,990.55 = 3,300.36/x
  3. Step 3: Cross multiply
    12,660.37x = 18,990.55 × 3,300.36
  4. Step 4: Simplify right side
    12,660.37x = 62,675,584.51
  5. Step 5: Solve for x
    x = 62,675,584.51/12,660.37
  6. Step 6: Final answer
    x = 4,950.53

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Similar ratio
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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.