Home / 12,660.37-18,976.07-7,918.68

Finding the Fourth Proportional to 12,660.37, 18,976.07 and 7,918.68

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Solution

The fourth proportional to 12,660.37, 18,976.07 and 7,918.68 is: 11,868.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.37 : 18,976.07 = 7,918.68 : x
  2. Step 2: Convert to fraction form
    12,660.37/18,976.07 = 7,918.68/x
  3. Step 3: Cross multiply
    12,660.37x = 18,976.07 × 7,918.68
  4. Step 4: Simplify right side
    12,660.37x = 150,265,425.99
  5. Step 5: Solve for x
    x = 150,265,425.99/12,660.37
  6. Step 6: Final answer
    x = 11,868.96

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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.