Home / 13,525.20-20,287.80-8,859.60

Finding the Fourth Proportional to 13,525.20, 20,287.80 and 8,859.60

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Solution

The fourth proportional to 13,525.20, 20,287.80 and 8,859.60 is: 13,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.20 : 20,287.80 = 8,859.60 : x
  2. Step 2: Convert to fraction form
    13,525.20/20,287.80 = 8,859.60/x
  3. Step 3: Cross multiply
    13,525.20x = 20,287.80 × 8,859.60
  4. Step 4: Simplify right side
    13,525.20x = 179,741,792.88
  5. Step 5: Solve for x
    x = 179,741,792.88/13,525.20
  6. Step 6: Final answer
    x = 13,289.40

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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.