Home / 13,745.10-20,625.57-8,211.90

Finding the Fourth Proportional to 13,745.10, 20,625.57 and 8,211.90

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Solution

The fourth proportional to 13,745.10, 20,625.57 and 8,211.90 is: 12,322.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.10 : 20,625.57 = 8,211.90 : x
  2. Step 2: Convert to fraction form
    13,745.10/20,625.57 = 8,211.90/x
  3. Step 3: Cross multiply
    13,745.10x = 20,625.57 × 8,211.90
  4. Step 4: Simplify right side
    13,745.10x = 169,375,118.28
  5. Step 5: Solve for x
    x = 169,375,118.28/13,745.10
  6. Step 6: Final answer
    x = 12,322.58

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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.