Finding the Fourth Proportional to 20,511,222.93, 28,314,203.46 and 12,780,084.99
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Solution
The fourth proportional to 20,511,222.93, 28,314,203.46 and 12,780,084.99 is: 17,641,947.92
Step by Step Solution
- Step 1: Write the proportion equation
20,511,222.93 : 28,314,203.46 = 12,780,084.99 : x - Step 2: Convert to fraction form
20,511,222.93/28,314,203.46 = 12,780,084.99/x - Step 3: Cross multiply
20,511,222.93x = 28,314,203.46 × 12,780,084.99 - Step 4: Simplify right side
20,511,222.93x = 361,857,926,642,952.06 - Step 5: Solve for x
x = 361,857,926,642,952.06/20,511,222.93 - Step 6: Final answer
x = 17,641,947.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.