Home / 18,485.40-27,725.37-8,623.86

Finding the Fourth Proportional to 18,485.40, 27,725.37 and 8,623.86

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Solution

The fourth proportional to 18,485.40, 27,725.37 and 8,623.86 is: 12,934.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.40 : 27,725.37 = 8,623.86 : x
  2. Step 2: Convert to fraction form
    18,485.40/27,725.37 = 8,623.86/x
  3. Step 3: Cross multiply
    18,485.40x = 27,725.37 × 8,623.86
  4. Step 4: Simplify right side
    18,485.40x = 239,099,709.33
  5. Step 5: Solve for x
    x = 239,099,709.33/18,485.40
  6. Step 6: Final answer
    x = 12,934.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.