Finding the Fourth Proportional to 12,331,990.80, 18,497,986.20 and 11,744,125.20
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Solution
The fourth proportional to 12,331,990.80, 18,497,986.20 and 11,744,125.20 is: 17,616,187.80
Step by Step Solution
- Step 1: Write the proportion equation
12,331,990.80 : 18,497,986.20 = 11,744,125.20 : x - Step 2: Convert to fraction form
12,331,990.80/18,497,986.20 = 11,744,125.20/x - Step 3: Cross multiply
12,331,990.80x = 18,497,986.20 × 11,744,125.20 - Step 4: Simplify right side
12,331,990.80x = 217,242,665,880,672.22 - Step 5: Solve for x
x = 217,242,665,880,672.22/12,331,990.80 - Step 6: Final answer
x = 17,616,187.80
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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.