Home / 12,285.44-18,431.32-3,520.96

Finding the Fourth Proportional to 12,285.44, 18,431.32 and 3,520.96

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Solution

The fourth proportional to 12,285.44, 18,431.32 and 3,520.96 is: 5,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.44 : 18,431.32 = 3,520.96 : x
  2. Step 2: Convert to fraction form
    12,285.44/18,431.32 = 3,520.96/x
  3. Step 3: Cross multiply
    12,285.44x = 18,431.32 × 3,520.96
  4. Step 4: Simplify right side
    12,285.44x = 64,895,940.47
  5. Step 5: Solve for x
    x = 64,895,940.47/12,285.44
  6. Step 6: Final answer
    x = 5,282.35

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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.