Home / 13,162.09-18,163.69-7,112.33

Finding the Fourth Proportional to 13,162.09, 18,163.69 and 7,112.33

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Solution

The fourth proportional to 13,162.09, 18,163.69 and 7,112.33 is: 9,815.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.09 : 18,163.69 = 7,112.33 : x
  2. Step 2: Convert to fraction form
    13,162.09/18,163.69 = 7,112.33/x
  3. Step 3: Cross multiply
    13,162.09x = 18,163.69 × 7,112.33
  4. Step 4: Simplify right side
    13,162.09x = 129,186,157.30
  5. Step 5: Solve for x
    x = 129,186,157.30/13,162.09
  6. Step 6: Final answer
    x = 9,815.02

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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.