Home / 20,779.94-31,162.62-5,984.90

Finding the Fourth Proportional to 20,779.94, 31,162.62 and 5,984.90

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Solution

The fourth proportional to 20,779.94, 31,162.62 and 5,984.90 is: 8,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.94 : 31,162.62 = 5,984.90 : x
  2. Step 2: Convert to fraction form
    20,779.94/31,162.62 = 5,984.90/x
  3. Step 3: Cross multiply
    20,779.94x = 31,162.62 × 5,984.90
  4. Step 4: Simplify right side
    20,779.94x = 186,505,164.44
  5. Step 5: Solve for x
    x = 186,505,164.44/20,779.94
  6. Step 6: Final answer
    x = 8,975.25

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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.