Home / 12,190.23-18,259.83-7,785.27

Finding the Fourth Proportional to 12,190.23, 18,259.83 and 7,785.27

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Solution

The fourth proportional to 12,190.23, 18,259.83 and 7,785.27 is: 11,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.23 : 18,259.83 = 7,785.27 : x
  2. Step 2: Convert to fraction form
    12,190.23/18,259.83 = 7,785.27/x
  3. Step 3: Cross multiply
    12,190.23x = 18,259.83 × 7,785.27
  4. Step 4: Simplify right side
    12,190.23x = 142,157,706.70
  5. Step 5: Solve for x
    x = 142,157,706.70/12,190.23
  6. Step 6: Final answer
    x = 11,661.61

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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.