Finding the Fourth Proportional to 21,053,832.79, 29,042,161.93 and 12,675,370.18
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Solution
The fourth proportional to 21,053,832.79, 29,042,161.93 and 12,675,370.18 is: 17,484,709.65
Step by Step Solution
- Step 1: Write the proportion equation
21,053,832.79 : 29,042,161.93 = 12,675,370.18 : x - Step 2: Convert to fraction form
21,053,832.79/29,042,161.93 = 12,675,370.18/x - Step 3: Cross multiply
21,053,832.79x = 29,042,161.93 × 12,675,370.18 - Step 4: Simplify right side
21,053,832.79x = 368,120,153,241,948.06 - Step 5: Solve for x
x = 368,120,153,241,948.06/21,053,832.79 - Step 6: Final answer
x = 17,484,709.65
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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.