Home / 13,422.35-20,141.44-5,109.36

Finding the Fourth Proportional to 13,422.35, 20,141.44 and 5,109.36

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Solution

The fourth proportional to 13,422.35, 20,141.44 and 5,109.36 is: 7,667.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.35 : 20,141.44 = 5,109.36 : x
  2. Step 2: Convert to fraction form
    13,422.35/20,141.44 = 5,109.36/x
  3. Step 3: Cross multiply
    13,422.35x = 20,141.44 × 5,109.36
  4. Step 4: Simplify right side
    13,422.35x = 102,909,867.88
  5. Step 5: Solve for x
    x = 102,909,867.88/13,422.35
  6. Step 6: Final answer
    x = 7,667.05

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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.