Home / 20,481.86-28,263.74-11,529.03

Finding the Fourth Proportional to 20,481.86, 28,263.74 and 11,529.03

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Solution

The fourth proportional to 20,481.86, 28,263.74 and 11,529.03 is: 15,909.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.86 : 28,263.74 = 11,529.03 : x
  2. Step 2: Convert to fraction form
    20,481.86/28,263.74 = 11,529.03/x
  3. Step 3: Cross multiply
    20,481.86x = 28,263.74 × 11,529.03
  4. Step 4: Simplify right side
    20,481.86x = 325,853,554.72
  5. Step 5: Solve for x
    x = 325,853,554.72/20,481.86
  6. Step 6: Final answer
    x = 15,909.37

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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.