Home / 14,147.96-21,202.79-5,378.09

Finding the Fourth Proportional to 14,147.96, 21,202.79 and 5,378.09

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Solution

The fourth proportional to 14,147.96, 21,202.79 and 5,378.09 is: 8,059.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.96 : 21,202.79 = 5,378.09 : x
  2. Step 2: Convert to fraction form
    14,147.96/21,202.79 = 5,378.09/x
  3. Step 3: Cross multiply
    14,147.96x = 21,202.79 × 5,378.09
  4. Step 4: Simplify right side
    14,147.96x = 114,030,379.97
  5. Step 5: Solve for x
    x = 114,030,379.97/14,147.96
  6. Step 6: Final answer
    x = 8,059.85

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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.