Finding the Fourth Proportional to 18,493,669.30, 27,740,503.95 and 12,447,051.70
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Solution
The fourth proportional to 18,493,669.30, 27,740,503.95 and 12,447,051.70 is: 18,670,577.55
Step by Step Solution
- Step 1: Write the proportion equation
18,493,669.30 : 27,740,503.95 = 12,447,051.70 : x - Step 2: Convert to fraction form
18,493,669.30/27,740,503.95 = 12,447,051.70/x - Step 3: Cross multiply
18,493,669.30x = 27,740,503.95 × 12,447,051.70 - Step 4: Simplify right side
18,493,669.30x = 345,287,486,849,704.19 - Step 5: Solve for x
x = 345,287,486,849,704.19/18,493,669.30 - Step 6: Final answer
x = 18,670,577.55
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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.