Finding the Fourth Proportional to 13,161,896.64, 18,164,342.88 and 7,361,218.08
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Solution
The fourth proportional to 13,161,896.64, 18,164,342.88 and 7,361,218.08 is: 10,158,998.58
Step by Step Solution
- Step 1: Write the proportion equation
13,161,896.64 : 18,164,342.88 = 7,361,218.08 : x - Step 2: Convert to fraction form
13,161,896.64/18,164,342.88 = 7,361,218.08/x - Step 3: Cross multiply
13,161,896.64x = 18,164,342.88 × 7,361,218.08 - Step 4: Simplify right side
13,161,896.64x = 133,711,689,219,575.27 - Step 5: Solve for x
x = 133,711,689,219,575.27/13,161,896.64 - Step 6: Final answer
x = 10,158,998.58
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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.