Home / 13,415.42-20,104.90-5,090.96

Finding the Fourth Proportional to 13,415.42, 20,104.90 and 5,090.96

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Solution

The fourth proportional to 13,415.42, 20,104.90 and 5,090.96 is: 7,629.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.42 : 20,104.90 = 5,090.96 : x
  2. Step 2: Convert to fraction form
    13,415.42/20,104.90 = 5,090.96/x
  3. Step 3: Cross multiply
    13,415.42x = 20,104.90 × 5,090.96
  4. Step 4: Simplify right side
    13,415.42x = 102,353,241.70
  5. Step 5: Solve for x
    x = 102,353,241.70/13,415.42
  6. Step 6: Final answer
    x = 7,629.52

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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.