Finding the Fourth Proportional to 12,485,729.20, 18,723,928.20 and 8,687,930.80
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Solution
The fourth proportional to 12,485,729.20, 18,723,928.20 and 8,687,930.80 is: 13,028,649.74
Step by Step Solution
- Step 1: Write the proportion equation
12,485,729.20 : 18,723,928.20 = 8,687,930.80 : x - Step 2: Convert to fraction form
12,485,729.20/18,723,928.20 = 8,687,930.80/x - Step 3: Cross multiply
12,485,729.20x = 18,723,928.20 × 8,687,930.80 - Step 4: Simplify right side
12,485,729.20x = 162,672,192,505,768.56 - Step 5: Solve for x
x = 162,672,192,505,768.56/12,485,729.20 - Step 6: Final answer
x = 13,028,649.74
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.