Home / 13,826.52-20,739.69-3,438.24

Finding the Fourth Proportional to 13,826.52, 20,739.69 and 3,438.24

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Solution

The fourth proportional to 13,826.52, 20,739.69 and 3,438.24 is: 5,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.52 : 20,739.69 = 3,438.24 : x
  2. Step 2: Convert to fraction form
    13,826.52/20,739.69 = 3,438.24/x
  3. Step 3: Cross multiply
    13,826.52x = 20,739.69 × 3,438.24
  4. Step 4: Simplify right side
    13,826.52x = 71,308,031.75
  5. Step 5: Solve for x
    x = 71,308,031.75/13,826.52
  6. Step 6: Final answer
    x = 5,157.34

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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.