Home / 13,845.12-20,738.88-9,388.80

Finding the Fourth Proportional to 13,845.12, 20,738.88 and 9,388.80

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Solution

The fourth proportional to 13,845.12, 20,738.88 and 9,388.80 is: 14,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.12 : 20,738.88 = 9,388.80 : x
  2. Step 2: Convert to fraction form
    13,845.12/20,738.88 = 9,388.80/x
  3. Step 3: Cross multiply
    13,845.12x = 20,738.88 × 9,388.80
  4. Step 4: Simplify right side
    13,845.12x = 194,713,196.54
  5. Step 5: Solve for x
    x = 194,713,196.54/13,845.12
  6. Step 6: Final answer
    x = 14,063.67

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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.