Home / 13,826.84-20,740.25-3,438.59

Finding the Fourth Proportional to 13,826.84, 20,740.25 and 3,438.59

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Solution

The fourth proportional to 13,826.84, 20,740.25 and 3,438.59 is: 5,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.84 : 20,740.25 = 3,438.59 : x
  2. Step 2: Convert to fraction form
    13,826.84/20,740.25 = 3,438.59/x
  3. Step 3: Cross multiply
    13,826.84x = 20,740.25 × 3,438.59
  4. Step 4: Simplify right side
    13,826.84x = 71,317,216.25
  5. Step 5: Solve for x
    x = 71,317,216.25/13,826.84
  6. Step 6: Final answer
    x = 5,157.88

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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.