Home / 13,640.58-20,460.82-3,779.83

Finding the Fourth Proportional to 13,640.58, 20,460.82 and 3,779.83

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Solution

The fourth proportional to 13,640.58, 20,460.82 and 3,779.83 is: 5,669.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.58 : 20,460.82 = 3,779.83 : x
  2. Step 2: Convert to fraction form
    13,640.58/20,460.82 = 3,779.83/x
  3. Step 3: Cross multiply
    13,640.58x = 20,460.82 × 3,779.83
  4. Step 4: Simplify right side
    13,640.58x = 77,338,462.96
  5. Step 5: Solve for x
    x = 77,338,462.96/13,640.58
  6. Step 6: Final answer
    x = 5,669.73

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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.