Home / 16,785.42-23,163.40-9,231.78

Finding the Fourth Proportional to 16,785.42, 23,163.40 and 9,231.78

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Solution

The fourth proportional to 16,785.42, 23,163.40 and 9,231.78 is: 12,739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,785.42 : 23,163.40 = 9,231.78 : x
  2. Step 2: Convert to fraction form
    16,785.42/23,163.40 = 9,231.78/x
  3. Step 3: Cross multiply
    16,785.42x = 23,163.40 × 9,231.78
  4. Step 4: Simplify right side
    16,785.42x = 213,839,412.85
  5. Step 5: Solve for x
    x = 213,839,412.85/16,785.42
  6. Step 6: Final answer
    x = 12,739.59

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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.