Home / 12,779.83-19,171.56-4,015.42

Finding the Fourth Proportional to 12,779.83, 19,171.56 and 4,015.42

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Solution

The fourth proportional to 12,779.83, 19,171.56 and 4,015.42 is: 6,023.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.83 : 19,171.56 = 4,015.42 : x
  2. Step 2: Convert to fraction form
    12,779.83/19,171.56 = 4,015.42/x
  3. Step 3: Cross multiply
    12,779.83x = 19,171.56 × 4,015.42
  4. Step 4: Simplify right side
    12,779.83x = 76,981,929.13
  5. Step 5: Solve for x
    x = 76,981,929.13/12,779.83
  6. Step 6: Final answer
    x = 6,023.71

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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.