Finding the Fourth Proportional to 18,744,538.68, 28,087,723.20 and 12,998,479.68
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Solution
The fourth proportional to 18,744,538.68, 28,087,723.20 and 12,998,479.68 is: 19,477,550.53
Step by Step Solution
- Step 1: Write the proportion equation
18,744,538.68 : 28,087,723.20 = 12,998,479.68 : x - Step 2: Convert to fraction form
18,744,538.68/28,087,723.20 = 12,998,479.68/x - Step 3: Cross multiply
18,744,538.68x = 28,087,723.20 × 12,998,479.68 - Step 4: Simplify right side
18,744,538.68x = 365,097,699,272,664.56 - Step 5: Solve for x
x = 365,097,699,272,664.56/18,744,538.68 - Step 6: Final answer
x = 19,477,550.53
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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.