Home / 13,183.70-18,193.31-7,215.28

Finding the Fourth Proportional to 13,183.70, 18,193.31 and 7,215.28

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Solution

The fourth proportional to 13,183.70, 18,193.31 and 7,215.28 is: 9,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.70 : 18,193.31 = 7,215.28 : x
  2. Step 2: Convert to fraction form
    13,183.70/18,193.31 = 7,215.28/x
  3. Step 3: Cross multiply
    13,183.70x = 18,193.31 × 7,215.28
  4. Step 4: Simplify right side
    13,183.70x = 131,269,771.27
  5. Step 5: Solve for x
    x = 131,269,771.27/13,183.70
  6. Step 6: Final answer
    x = 9,956.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.