Finding the Fourth Proportional to 19,986,062.90, 29,931,855.15 and 13,561,531.70
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Solution
The fourth proportional to 19,986,062.90, 29,931,855.15 and 13,561,531.70 is: 20,310,243.42
Step by Step Solution
- Step 1: Write the proportion equation
19,986,062.90 : 29,931,855.15 = 13,561,531.70 : x - Step 2: Convert to fraction form
19,986,062.90/29,931,855.15 = 13,561,531.70/x - Step 3: Cross multiply
19,986,062.90x = 29,931,855.15 × 13,561,531.70 - Step 4: Simplify right side
19,986,062.90x = 405,921,802,456,533.19 - Step 5: Solve for x
x = 405,921,802,456,533.19/19,986,062.90 - Step 6: Final answer
x = 20,310,243.42
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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.