Home / 20,662.70-28,514.50-11,231.19

Finding the Fourth Proportional to 20,662.70, 28,514.50 and 11,231.19

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Solution

The fourth proportional to 20,662.70, 28,514.50 and 11,231.19 is: 15,499.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.70 : 28,514.50 = 11,231.19 : x
  2. Step 2: Convert to fraction form
    20,662.70/28,514.50 = 11,231.19/x
  3. Step 3: Cross multiply
    20,662.70x = 28,514.50 × 11,231.19
  4. Step 4: Simplify right side
    20,662.70x = 320,251,739.18
  5. Step 5: Solve for x
    x = 320,251,739.18/20,662.70
  6. Step 6: Final answer
    x = 15,499.03

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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.