Home / 13,879.58-20,819.56-4,519.64

Finding the Fourth Proportional to 13,879.58, 20,819.56 and 4,519.64

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Solution

The fourth proportional to 13,879.58, 20,819.56 and 4,519.64 is: 6,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.58 : 20,819.56 = 4,519.64 : x
  2. Step 2: Convert to fraction form
    13,879.58/20,819.56 = 4,519.64/x
  3. Step 3: Cross multiply
    13,879.58x = 20,819.56 × 4,519.64
  4. Step 4: Simplify right side
    13,879.58x = 94,096,916.16
  5. Step 5: Solve for x
    x = 94,096,916.16/13,879.58
  6. Step 6: Final answer
    x = 6,779.52

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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.