Home / 12,581.15-18,874.44-3,816.72

Finding the Fourth Proportional to 12,581.15, 18,874.44 and 3,816.72

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Solution

The fourth proportional to 12,581.15, 18,874.44 and 3,816.72 is: 5,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.15 : 18,874.44 = 3,816.72 : x
  2. Step 2: Convert to fraction form
    12,581.15/18,874.44 = 3,816.72/x
  3. Step 3: Cross multiply
    12,581.15x = 18,874.44 × 3,816.72
  4. Step 4: Simplify right side
    12,581.15x = 72,038,452.64
  5. Step 5: Solve for x
    x = 72,038,452.64/12,581.15
  6. Step 6: Final answer
    x = 5,725.90

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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.