Finding the Fourth Proportional to 13,331,369.94, 18,398,786.79 and 7,530,525.30
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Solution
The fourth proportional to 13,331,369.94, 18,398,786.79 and 7,530,525.30 is: 10,392,970.12
Step by Step Solution
- Step 1: Write the proportion equation
13,331,369.94 : 18,398,786.79 = 7,530,525.30 : x - Step 2: Convert to fraction form
13,331,369.94/18,398,786.79 = 7,530,525.30/x - Step 3: Cross multiply
13,331,369.94x = 18,398,786.79 × 7,530,525.30 - Step 4: Simplify right side
13,331,369.94x = 138,552,529,411,400.78 - Step 5: Solve for x
x = 138,552,529,411,400.78/13,331,369.94 - Step 6: Final answer
x = 10,392,970.12
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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.