Home / 20,779.08-28,672.44-11,703.27

Finding the Fourth Proportional to 20,779.08, 28,672.44 and 11,703.27

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Solution

The fourth proportional to 20,779.08, 28,672.44 and 11,703.27 is: 16,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.08 : 28,672.44 = 11,703.27 : x
  2. Step 2: Convert to fraction form
    20,779.08/28,672.44 = 11,703.27/x
  3. Step 3: Cross multiply
    20,779.08x = 28,672.44 × 11,703.27
  4. Step 4: Simplify right side
    20,779.08x = 335,561,306.88
  5. Step 5: Solve for x
    x = 335,561,306.88/20,779.08
  6. Step 6: Final answer
    x = 16,149.00

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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.