Home / 20,779.96-31,162.62-5,984.92

Finding the Fourth Proportional to 20,779.96, 31,162.62 and 5,984.92

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Solution

The fourth proportional to 20,779.96, 31,162.62 and 5,984.92 is: 8,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.96 : 31,162.62 = 5,984.92 : x
  2. Step 2: Convert to fraction form
    20,779.96/31,162.62 = 5,984.92/x
  3. Step 3: Cross multiply
    20,779.96x = 31,162.62 × 5,984.92
  4. Step 4: Simplify right side
    20,779.96x = 186,505,787.69
  5. Step 5: Solve for x
    x = 186,505,787.69/20,779.96
  6. Step 6: Final answer
    x = 8,975.27

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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.