Home / 13,879.46-20,813.76-4,517.20

Finding the Fourth Proportional to 13,879.46, 20,813.76 and 4,517.20

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Solution

The fourth proportional to 13,879.46, 20,813.76 and 4,517.20 is: 6,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.46 : 20,813.76 = 4,517.20 : x
  2. Step 2: Convert to fraction form
    13,879.46/20,813.76 = 4,517.20/x
  3. Step 3: Cross multiply
    13,879.46x = 20,813.76 × 4,517.20
  4. Step 4: Simplify right side
    13,879.46x = 94,019,916.67
  5. Step 5: Solve for x
    x = 94,019,916.67/13,879.46
  6. Step 6: Final answer
    x = 6,774.03

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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.