Home / 12,644.43-18,971.55-5,247

Finding the Fourth Proportional to 12,644.43, 18,971.55 and 5,247

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Solution

The fourth proportional to 12,644.43, 18,971.55 and 5,247 is: 7,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,644.43 : 18,971.55 = 5,247 : x
  2. Step 2: Convert to fraction form
    12,644.43/18,971.55 = 5,247/x
  3. Step 3: Cross multiply
    12,644.43x = 18,971.55 × 5,247
  4. Step 4: Simplify right side
    12,644.43x = 99,543,722.85
  5. Step 5: Solve for x
    x = 99,543,722.85/12,644.43
  6. Step 6: Final answer
    x = 7,872.54

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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.