Home / 13,678.44-18,879.39-8,376.18

Finding the Fourth Proportional to 13,678.44, 18,879.39 and 8,376.18

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Solution

The fourth proportional to 13,678.44, 18,879.39 and 8,376.18 is: 11,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.44 : 18,879.39 = 8,376.18 : x
  2. Step 2: Convert to fraction form
    13,678.44/18,879.39 = 8,376.18/x
  3. Step 3: Cross multiply
    13,678.44x = 18,879.39 × 8,376.18
  4. Step 4: Simplify right side
    13,678.44x = 158,137,168.93
  5. Step 5: Solve for x
    x = 158,137,168.93/13,678.44
  6. Step 6: Final answer
    x = 11,561.05

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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.