Finding the Fourth Proportional to 15,357,917.94, 21,192,113.88 and 8,481,989.94
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Solution
The fourth proportional to 15,357,917.94, 21,192,113.88 and 8,481,989.94 is: 11,704,144.89
Step by Step Solution
- Step 1: Write the proportion equation
15,357,917.94 : 21,192,113.88 = 8,481,989.94 : x - Step 2: Convert to fraction form
15,357,917.94/21,192,113.88 = 8,481,989.94/x - Step 3: Cross multiply
15,357,917.94x = 21,192,113.88 × 8,481,989.94 - Step 4: Simplify right side
15,357,917.94x = 179,751,296,737,494.34 - Step 5: Solve for x
x = 179,751,296,737,494.34/15,357,917.94 - Step 6: Final answer
x = 11,704,144.89
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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.