Home / 13,163.16-18,164.61-7,194.81

Finding the Fourth Proportional to 13,163.16, 18,164.61 and 7,194.81

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Solution

The fourth proportional to 13,163.16, 18,164.61 and 7,194.81 is: 9,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.16 : 18,164.61 = 7,194.81 : x
  2. Step 2: Convert to fraction form
    13,163.16/18,164.61 = 7,194.81/x
  3. Step 3: Cross multiply
    13,163.16x = 18,164.61 × 7,194.81
  4. Step 4: Simplify right side
    13,163.16x = 130,690,917.67
  5. Step 5: Solve for x
    x = 130,690,917.67/13,163.16
  6. Step 6: Final answer
    x = 9,928.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.