Finding the Fourth Proportional to 19,538,971.80, 29,271,463.90 and 13,042,458.23
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Solution
The fourth proportional to 19,538,971.80, 29,271,463.90 and 13,042,458.23 is: 19,538,993.61
Step by Step Solution
- Step 1: Write the proportion equation
19,538,971.80 : 29,271,463.90 = 13,042,458.23 : x - Step 2: Convert to fraction form
19,538,971.80/29,271,463.90 = 13,042,458.23/x - Step 3: Cross multiply
19,538,971.80x = 29,271,463.90 × 13,042,458.23 - Step 4: Simplify right side
19,538,971.80x = 381,771,845,067,739.44 - Step 5: Solve for x
x = 381,771,845,067,739.44/19,538,971.80 - Step 6: Final answer
x = 19,538,993.61
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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.