Home / 13,408.14-20,121.42-4,643.07

Finding the Fourth Proportional to 13,408.14, 20,121.42 and 4,643.07

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Solution

The fourth proportional to 13,408.14, 20,121.42 and 4,643.07 is: 6,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.14 : 20,121.42 = 4,643.07 : x
  2. Step 2: Convert to fraction form
    13,408.14/20,121.42 = 4,643.07/x
  3. Step 3: Cross multiply
    13,408.14x = 20,121.42 × 4,643.07
  4. Step 4: Simplify right side
    13,408.14x = 93,425,161.56
  5. Step 5: Solve for x
    x = 93,425,161.56/13,408.14
  6. Step 6: Final answer
    x = 6,967.79

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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.