Home / 11,435.42-15,779.94-6,399.38

Finding the Fourth Proportional to 11,435.42, 15,779.94 and 6,399.38

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Solution

The fourth proportional to 11,435.42, 15,779.94 and 6,399.38 is: 8,830.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,435.42 : 15,779.94 = 6,399.38 : x
  2. Step 2: Convert to fraction form
    11,435.42/15,779.94 = 6,399.38/x
  3. Step 3: Cross multiply
    11,435.42x = 15,779.94 × 6,399.38
  4. Step 4: Simplify right side
    11,435.42x = 100,981,832.44
  5. Step 5: Solve for x
    x = 100,981,832.44/11,435.42
  6. Step 6: Final answer
    x = 8,830.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.