Home / 13,405.42-20,105.07-5,086.36

Finding the Fourth Proportional to 13,405.42, 20,105.07 and 5,086.36

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Solution

The fourth proportional to 13,405.42, 20,105.07 and 5,086.36 is: 7,628.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.42 : 20,105.07 = 5,086.36 : x
  2. Step 2: Convert to fraction form
    13,405.42/20,105.07 = 5,086.36/x
  3. Step 3: Cross multiply
    13,405.42x = 20,105.07 × 5,086.36
  4. Step 4: Simplify right side
    13,405.42x = 102,261,623.85
  5. Step 5: Solve for x
    x = 102,261,623.85/13,405.42
  6. Step 6: Final answer
    x = 7,628.38

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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.