Home / 18,128.14-27,185.67-6,278.72

Finding the Fourth Proportional to 18,128.14, 27,185.67 and 6,278.72

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Solution

The fourth proportional to 18,128.14, 27,185.67 and 6,278.72 is: 9,415.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.14 : 27,185.67 = 6,278.72 : x
  2. Step 2: Convert to fraction form
    18,128.14/27,185.67 = 6,278.72/x
  3. Step 3: Cross multiply
    18,128.14x = 27,185.67 × 6,278.72
  4. Step 4: Simplify right side
    18,128.14x = 170,691,074.01
  5. Step 5: Solve for x
    x = 170,691,074.01/18,128.14
  6. Step 6: Final answer
    x = 9,415.81

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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.