Home / 13,447.92-20,190.60-6,878.64

Finding the Fourth Proportional to 13,447.92, 20,190.60 and 6,878.64

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Solution

The fourth proportional to 13,447.92, 20,190.60 and 6,878.64 is: 10,327.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.92 : 20,190.60 = 6,878.64 : x
  2. Step 2: Convert to fraction form
    13,447.92/20,190.60 = 6,878.64/x
  3. Step 3: Cross multiply
    13,447.92x = 20,190.60 × 6,878.64
  4. Step 4: Simplify right side
    13,447.92x = 138,883,868.78
  5. Step 5: Solve for x
    x = 138,883,868.78/13,447.92
  6. Step 6: Final answer
    x = 10,327.54

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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.