Finding the Fourth Proportional to 19,538,972.36, 29,271,464.74 and 13,042,458.79
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Solution
The fourth proportional to 19,538,972.36, 29,271,464.74 and 13,042,458.79 is: 19,538,994.45
Step by Step Solution
- Step 1: Write the proportion equation
19,538,972.36 : 29,271,464.74 = 13,042,458.79 : x - Step 2: Convert to fraction form
19,538,972.36/29,271,464.74 = 13,042,458.79/x - Step 3: Cross multiply
19,538,972.36x = 29,271,464.74 × 13,042,458.79 - Step 4: Simplify right side
19,538,972.36x = 381,771,872,537,512.50 - Step 5: Solve for x
x = 381,771,872,537,512.50/19,538,972.36 - Step 6: Final answer
x = 19,538,994.45
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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.