Home / 18,145.58-27,221.57-8,285.85

Finding the Fourth Proportional to 18,145.58, 27,221.57 and 8,285.85

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Solution

The fourth proportional to 18,145.58, 27,221.57 and 8,285.85 is: 12,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.58 : 27,221.57 = 8,285.85 : x
  2. Step 2: Convert to fraction form
    18,145.58/27,221.57 = 8,285.85/x
  3. Step 3: Cross multiply
    18,145.58x = 27,221.57 × 8,285.85
  4. Step 4: Simplify right side
    18,145.58x = 225,553,804.36
  5. Step 5: Solve for x
    x = 225,553,804.36/18,145.58
  6. Step 6: Final answer
    x = 12,430.24

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1.5x scale

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.