Home / 20,078.07-30,163.27-14,168.56

Finding the Fourth Proportional to 20,078.07, 30,163.27 and 14,168.56

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Solution

The fourth proportional to 20,078.07, 30,163.27 and 14,168.56 is: 21,285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.07 : 30,163.27 = 14,168.56 : x
  2. Step 2: Convert to fraction form
    20,078.07/30,163.27 = 14,168.56/x
  3. Step 3: Cross multiply
    20,078.07x = 30,163.27 × 14,168.56
  4. Step 4: Simplify right side
    20,078.07x = 427,370,100.79
  5. Step 5: Solve for x
    x = 427,370,100.79/20,078.07
  6. Step 6: Final answer
    x = 21,285.42

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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.