Home / 13,745.53-20,621.10-4,385.29

Finding the Fourth Proportional to 13,745.53, 20,621.10 and 4,385.29

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Solution

The fourth proportional to 13,745.53, 20,621.10 and 4,385.29 is: 6,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.53 : 20,621.10 = 4,385.29 : x
  2. Step 2: Convert to fraction form
    13,745.53/20,621.10 = 4,385.29/x
  3. Step 3: Cross multiply
    13,745.53x = 20,621.10 × 4,385.29
  4. Step 4: Simplify right side
    13,745.53x = 90,429,503.62
  5. Step 5: Solve for x
    x = 90,429,503.62/13,745.53
  6. Step 6: Final answer
    x = 6,578.83

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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.