Home / 13,515.96-20,273.34-4,155.60

Finding the Fourth Proportional to 13,515.96, 20,273.34 and 4,155.60

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Solution

The fourth proportional to 13,515.96, 20,273.34 and 4,155.60 is: 6,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.96 : 20,273.34 = 4,155.60 : x
  2. Step 2: Convert to fraction form
    13,515.96/20,273.34 = 4,155.60/x
  3. Step 3: Cross multiply
    13,515.96x = 20,273.34 × 4,155.60
  4. Step 4: Simplify right side
    13,515.96x = 84,247,891.70
  5. Step 5: Solve for x
    x = 84,247,891.70/13,515.96
  6. Step 6: Final answer
    x = 6,233.22

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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.