Home / 20,550.72-30,825.60-11,779.20

Finding the Fourth Proportional to 20,550.72, 30,825.60 and 11,779.20

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Solution

The fourth proportional to 20,550.72, 30,825.60 and 11,779.20 is: 17,668.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.72 : 30,825.60 = 11,779.20 : x
  2. Step 2: Convert to fraction form
    20,550.72/30,825.60 = 11,779.20/x
  3. Step 3: Cross multiply
    20,550.72x = 30,825.60 × 11,779.20
  4. Step 4: Simplify right side
    20,550.72x = 363,100,907.52
  5. Step 5: Solve for x
    x = 363,100,907.52/20,550.72
  6. Step 6: Final answer
    x = 17,668.52

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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.