Home / 20,489,507.30-28,274,409.95-11,321,559.56

Finding the Fourth Proportional to 20,489,507.30, 28,274,409.95 and 11,321,559.56

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Solution

The fourth proportional to 20,489,507.30, 28,274,409.95 and 11,321,559.56 is: 15,623,138.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489,507.30 : 28,274,409.95 = 11,321,559.56 : x
  2. Step 2: Convert to fraction form
    20,489,507.30/28,274,409.95 = 11,321,559.56/x
  3. Step 3: Cross multiply
    20,489,507.30x = 28,274,409.95 × 11,321,559.56
  4. Step 4: Simplify right side
    20,489,507.30x = 320,110,416,286,859.88
  5. Step 5: Solve for x
    x = 320,110,416,286,859.88/20,489,507.30
  6. Step 6: Final answer
    x = 15,623,138.79

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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.