Home / 13,418.70-18,515.88-7,450.44

Finding the Fourth Proportional to 13,418.70, 18,515.88 and 7,450.44

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Solution

The fourth proportional to 13,418.70, 18,515.88 and 7,450.44 is: 10,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.70 : 18,515.88 = 7,450.44 : x
  2. Step 2: Convert to fraction form
    13,418.70/18,515.88 = 7,450.44/x
  3. Step 3: Cross multiply
    13,418.70x = 18,515.88 × 7,450.44
  4. Step 4: Simplify right side
    13,418.70x = 137,951,452.99
  5. Step 5: Solve for x
    x = 137,951,452.99/13,418.70
  6. Step 6: Final answer
    x = 10,280.54

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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.