Home / 20,431.62-30,625.59-13,408.98

Finding the Fourth Proportional to 20,431.62, 30,625.59 and 13,408.98

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Solution

The fourth proportional to 20,431.62, 30,625.59 and 13,408.98 is: 20,099.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.62 : 30,625.59 = 13,408.98 : x
  2. Step 2: Convert to fraction form
    20,431.62/30,625.59 = 13,408.98/x
  3. Step 3: Cross multiply
    20,431.62x = 30,625.59 × 13,408.98
  4. Step 4: Simplify right side
    20,431.62x = 410,657,923.80
  5. Step 5: Solve for x
    x = 410,657,923.80/20,431.62
  6. Step 6: Final answer
    x = 20,099.14

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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.