Home / 18,751,015.20-28,126,522.80-5,287,843.20

Finding the Fourth Proportional to 18,751,015.20, 28,126,522.80 and 5,287,843.20

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Solution

The fourth proportional to 18,751,015.20, 28,126,522.80 and 5,287,843.20 is: 7,931,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751,015.20 : 28,126,522.80 = 5,287,843.20 : x
  2. Step 2: Convert to fraction form
    18,751,015.20/28,126,522.80 = 5,287,843.20/x
  3. Step 3: Cross multiply
    18,751,015.20x = 28,126,522.80 × 5,287,843.20
  4. Step 4: Simplify right side
    18,751,015.20x = 148,728,642,327,624.97
  5. Step 5: Solve for x
    x = 148,728,642,327,624.97/18,751,015.20
  6. Step 6: Final answer
    x = 7,931,764.80

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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.