Home / 13,419,761.21-20,129,079.56-4,321,657.42

Finding the Fourth Proportional to 13,419,761.21, 20,129,079.56 and 4,321,657.42

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Solution

The fourth proportional to 13,419,761.21, 20,129,079.56 and 4,321,657.42 is: 6,482,305.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,761.21 : 20,129,079.56 = 4,321,657.42 : x
  2. Step 2: Convert to fraction form
    13,419,761.21/20,129,079.56 = 4,321,657.42/x
  3. Step 3: Cross multiply
    13,419,761.21x = 20,129,079.56 × 4,321,657.42
  4. Step 4: Simplify right side
    13,419,761.21x = 86,990,985,915,990.66
  5. Step 5: Solve for x
    x = 86,990,985,915,990.66/13,419,761.21
  6. Step 6: Final answer
    x = 6,482,305.05

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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.