Home / 13,890.37-19,168.21-7,923.94

Finding the Fourth Proportional to 13,890.37, 19,168.21 and 7,923.94

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Solution

The fourth proportional to 13,890.37, 19,168.21 and 7,923.94 is: 10,934.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.37 : 19,168.21 = 7,923.94 : x
  2. Step 2: Convert to fraction form
    13,890.37/19,168.21 = 7,923.94/x
  3. Step 3: Cross multiply
    13,890.37x = 19,168.21 × 7,923.94
  4. Step 4: Simplify right side
    13,890.37x = 151,887,745.95
  5. Step 5: Solve for x
    x = 151,887,745.95/13,890.37
  6. Step 6: Final answer
    x = 10,934.75

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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.