Home / 12,161.72-16,784.19-6,857.63

Finding the Fourth Proportional to 12,161.72, 16,784.19 and 6,857.63

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Solution

The fourth proportional to 12,161.72, 16,784.19 and 6,857.63 is: 9,464.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.72 : 16,784.19 = 6,857.63 : x
  2. Step 2: Convert to fraction form
    12,161.72/16,784.19 = 6,857.63/x
  3. Step 3: Cross multiply
    12,161.72x = 16,784.19 × 6,857.63
  4. Step 4: Simplify right side
    12,161.72x = 115,099,730.58
  5. Step 5: Solve for x
    x = 115,099,730.58/12,161.72
  6. Step 6: Final answer
    x = 9,464.10

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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.