Home / 13,679.24-20,517.90-7,817.48

Finding the Fourth Proportional to 13,679.24, 20,517.90 and 7,817.48

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Solution

The fourth proportional to 13,679.24, 20,517.90 and 7,817.48 is: 11,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.24 : 20,517.90 = 7,817.48 : x
  2. Step 2: Convert to fraction form
    13,679.24/20,517.90 = 7,817.48/x
  3. Step 3: Cross multiply
    13,679.24x = 20,517.90 × 7,817.48
  4. Step 4: Simplify right side
    13,679.24x = 160,398,272.89
  5. Step 5: Solve for x
    x = 160,398,272.89/13,679.24
  6. Step 6: Final answer
    x = 11,725.67

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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.