Home / 13,611.30-20,397.48-7,755.84

Finding the Fourth Proportional to 13,611.30, 20,397.48 and 7,755.84

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Solution

The fourth proportional to 13,611.30, 20,397.48 and 7,755.84 is: 11,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.30 : 20,397.48 = 7,755.84 : x
  2. Step 2: Convert to fraction form
    13,611.30/20,397.48 = 7,755.84/x
  3. Step 3: Cross multiply
    13,611.30x = 20,397.48 × 7,755.84
  4. Step 4: Simplify right side
    13,611.30x = 158,199,591.28
  5. Step 5: Solve for x
    x = 158,199,591.28/13,611.30
  6. Step 6: Final answer
    x = 11,622.67

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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.