Home / 20,779.44-28,674.72-11,828.88

Finding the Fourth Proportional to 20,779.44, 28,674.72 and 11,828.88

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Solution

The fourth proportional to 20,779.44, 28,674.72 and 11,828.88 is: 16,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.44 : 28,674.72 = 11,828.88 : x
  2. Step 2: Convert to fraction form
    20,779.44/28,674.72 = 11,828.88/x
  3. Step 3: Cross multiply
    20,779.44x = 28,674.72 × 11,828.88
  4. Step 4: Simplify right side
    20,779.44x = 339,189,821.91
  5. Step 5: Solve for x
    x = 339,189,821.91/20,779.44
  6. Step 6: Final answer
    x = 16,323.34

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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.