Home / 12,078.63-16,674.21-8,102.34

Finding the Fourth Proportional to 12,078.63, 16,674.21 and 8,102.34

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Solution

The fourth proportional to 12,078.63, 16,674.21 and 8,102.34 is: 11,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.63 : 16,674.21 = 8,102.34 : x
  2. Step 2: Convert to fraction form
    12,078.63/16,674.21 = 8,102.34/x
  3. Step 3: Cross multiply
    12,078.63x = 16,674.21 × 8,102.34
  4. Step 4: Simplify right side
    12,078.63x = 135,100,118.65
  5. Step 5: Solve for x
    x = 135,100,118.65/12,078.63
  6. Step 6: Final answer
    x = 11,185.05

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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.