Home / 14,138.37-21,198.85-4,777.50

Finding the Fourth Proportional to 14,138.37, 21,198.85 and 4,777.50

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Solution

The fourth proportional to 14,138.37, 21,198.85 and 4,777.50 is: 7,163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.37 : 21,198.85 = 4,777.50 : x
  2. Step 2: Convert to fraction form
    14,138.37/21,198.85 = 4,777.50/x
  3. Step 3: Cross multiply
    14,138.37x = 21,198.85 × 4,777.50
  4. Step 4: Simplify right side
    14,138.37x = 101,277,505.88
  5. Step 5: Solve for x
    x = 101,277,505.88/14,138.37
  6. Step 6: Final answer
    x = 7,163.31

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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.