Home / 13,826.76-20,740.23-3,438.60

Finding the Fourth Proportional to 13,826.76, 20,740.23 and 3,438.60

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Solution

The fourth proportional to 13,826.76, 20,740.23 and 3,438.60 is: 5,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.76 : 20,740.23 = 3,438.60 : x
  2. Step 2: Convert to fraction form
    13,826.76/20,740.23 = 3,438.60/x
  3. Step 3: Cross multiply
    13,826.76x = 20,740.23 × 3,438.60
  4. Step 4: Simplify right side
    13,826.76x = 71,317,354.88
  5. Step 5: Solve for x
    x = 71,317,354.88/13,826.76
  6. Step 6: Final answer
    x = 5,157.92

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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.