Home / 12,520.30-18,779.22-3,286.30

Finding the Fourth Proportional to 12,520.30, 18,779.22 and 3,286.30

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Solution

The fourth proportional to 12,520.30, 18,779.22 and 3,286.30 is: 4,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.30 : 18,779.22 = 3,286.30 : x
  2. Step 2: Convert to fraction form
    12,520.30/18,779.22 = 3,286.30/x
  3. Step 3: Cross multiply
    12,520.30x = 18,779.22 × 3,286.30
  4. Step 4: Simplify right side
    12,520.30x = 61,714,150.69
  5. Step 5: Solve for x
    x = 61,714,150.69/12,520.30
  6. Step 6: Final answer
    x = 4,929.13

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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.