Home / 12,161.28-16,783.92-6,857.44

Finding the Fourth Proportional to 12,161.28, 16,783.92 and 6,857.44

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Solution

The fourth proportional to 12,161.28, 16,783.92 and 6,857.44 is: 9,464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.28 : 16,783.92 = 6,857.44 : x
  2. Step 2: Convert to fraction form
    12,161.28/16,783.92 = 6,857.44/x
  3. Step 3: Cross multiply
    12,161.28x = 16,783.92 × 6,857.44
  4. Step 4: Simplify right side
    12,161.28x = 115,094,724.36
  5. Step 5: Solve for x
    x = 115,094,724.36/12,161.28
  6. Step 6: Final answer
    x = 9,464.03

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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.