Home / 12,163.56-16,785.20-6,858.87

Finding the Fourth Proportional to 12,163.56, 16,785.20 and 6,858.87

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Solution

The fourth proportional to 12,163.56, 16,785.20 and 6,858.87 is: 9,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.56 : 16,785.20 = 6,858.87 : x
  2. Step 2: Convert to fraction form
    12,163.56/16,785.20 = 6,858.87/x
  3. Step 3: Cross multiply
    12,163.56x = 16,785.20 × 6,858.87
  4. Step 4: Simplify right side
    12,163.56x = 115,127,521.87
  5. Step 5: Solve for x
    x = 115,127,521.87/12,163.56
  6. Step 6: Final answer
    x = 9,464.95

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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.