Home / 13,863.85-20,806.71-6,464.50

Finding the Fourth Proportional to 13,863.85, 20,806.71 and 6,464.50

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Solution

The fourth proportional to 13,863.85, 20,806.71 and 6,464.50 is: 9,701.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.85 : 20,806.71 = 6,464.50 : x
  2. Step 2: Convert to fraction form
    13,863.85/20,806.71 = 6,464.50/x
  3. Step 3: Cross multiply
    13,863.85x = 20,806.71 × 6,464.50
  4. Step 4: Simplify right side
    13,863.85x = 134,504,976.80
  5. Step 5: Solve for x
    x = 134,504,976.80/13,863.85
  6. Step 6: Final answer
    x = 9,701.85

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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.