Home / 13,949.37-20,915.42-6,147.45

Finding the Fourth Proportional to 13,949.37, 20,915.42 and 6,147.45

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Solution

The fourth proportional to 13,949.37, 20,915.42 and 6,147.45 is: 9,217.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.37 : 20,915.42 = 6,147.45 : x
  2. Step 2: Convert to fraction form
    13,949.37/20,915.42 = 6,147.45/x
  3. Step 3: Cross multiply
    13,949.37x = 20,915.42 × 6,147.45
  4. Step 4: Simplify right side
    13,949.37x = 128,576,467.94
  5. Step 5: Solve for x
    x = 128,576,467.94/13,949.37
  6. Step 6: Final answer
    x = 9,217.37

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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.