Home / 12,162.32-16,783.69-6,857.09

Finding the Fourth Proportional to 12,162.32, 16,783.69 and 6,857.09

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Solution

The fourth proportional to 12,162.32, 16,783.69 and 6,857.09 is: 9,462.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.32 : 16,783.69 = 6,857.09 : x
  2. Step 2: Convert to fraction form
    12,162.32/16,783.69 = 6,857.09/x
  3. Step 3: Cross multiply
    12,162.32x = 16,783.69 × 6,857.09
  4. Step 4: Simplify right side
    12,162.32x = 115,087,272.86
  5. Step 5: Solve for x
    x = 115,087,272.86/12,162.32
  6. Step 6: Final answer
    x = 9,462.61

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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.