Home / 12,612.34-18,921.26-3,847.02

Finding the Fourth Proportional to 12,612.34, 18,921.26 and 3,847.02

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Solution

The fourth proportional to 12,612.34, 18,921.26 and 3,847.02 is: 5,771.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.34 : 18,921.26 = 3,847.02 : x
  2. Step 2: Convert to fraction form
    12,612.34/18,921.26 = 3,847.02/x
  3. Step 3: Cross multiply
    12,612.34x = 18,921.26 × 3,847.02
  4. Step 4: Simplify right side
    12,612.34x = 72,790,465.65
  5. Step 5: Solve for x
    x = 72,790,465.65/12,612.34
  6. Step 6: Final answer
    x = 5,771.37

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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.