Home / 13,825.60-20,738.40-8,564.80

Finding the Fourth Proportional to 13,825.60, 20,738.40 and 8,564.80

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Solution

The fourth proportional to 13,825.60, 20,738.40 and 8,564.80 is: 12,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.60 : 20,738.40 = 8,564.80 : x
  2. Step 2: Convert to fraction form
    13,825.60/20,738.40 = 8,564.80/x
  3. Step 3: Cross multiply
    13,825.60x = 20,738.40 × 8,564.80
  4. Step 4: Simplify right side
    13,825.60x = 177,620,248.32
  5. Step 5: Solve for x
    x = 177,620,248.32/13,825.60
  6. Step 6: Final answer
    x = 12,847.20

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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.