Home / 20,269.37-30,408.78-6,942.51

Finding the Fourth Proportional to 20,269.37, 30,408.78 and 6,942.51

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Solution

The fourth proportional to 20,269.37, 30,408.78 and 6,942.51 is: 10,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.37 : 30,408.78 = 6,942.51 : x
  2. Step 2: Convert to fraction form
    20,269.37/30,408.78 = 6,942.51/x
  3. Step 3: Cross multiply
    20,269.37x = 30,408.78 × 6,942.51
  4. Step 4: Simplify right side
    20,269.37x = 211,113,285.27
  5. Step 5: Solve for x
    x = 211,113,285.27/20,269.37
  6. Step 6: Final answer
    x = 10,415.38

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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.