Home / 13,391.86-20,100.21-6,822.97

Finding the Fourth Proportional to 13,391.86, 20,100.21 and 6,822.97

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Solution

The fourth proportional to 13,391.86, 20,100.21 and 6,822.97 is: 10,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.86 : 20,100.21 = 6,822.97 : x
  2. Step 2: Convert to fraction form
    13,391.86/20,100.21 = 6,822.97/x
  3. Step 3: Cross multiply
    13,391.86x = 20,100.21 × 6,822.97
  4. Step 4: Simplify right side
    13,391.86x = 137,143,029.32
  5. Step 5: Solve for x
    x = 137,143,029.32/13,391.86
  6. Step 6: Final answer
    x = 10,240.78

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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.