Home / 9,321.45-13,968.09-5,619.54

Finding the Fourth Proportional to 9,321.45, 13,968.09 and 5,619.54

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Solution

The fourth proportional to 9,321.45, 13,968.09 and 5,619.54 is: 8,420.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.45 : 13,968.09 = 5,619.54 : x
  2. Step 2: Convert to fraction form
    9,321.45/13,968.09 = 5,619.54/x
  3. Step 3: Cross multiply
    9,321.45x = 13,968.09 × 5,619.54
  4. Step 4: Simplify right side
    9,321.45x = 78,494,240.48
  5. Step 5: Solve for x
    x = 78,494,240.48/9,321.45
  6. Step 6: Final answer
    x = 8,420.82

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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.