Finding the Fourth Proportional to 13,677,571.20, 18,873,403.84 and 7,878,239.04
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Solution
The fourth proportional to 13,677,571.20, 18,873,403.84 and 7,878,239.04 is: 10,871,022.70
Step by Step Solution
- Step 1: Write the proportion equation
13,677,571.20 : 18,873,403.84 = 7,878,239.04 : x - Step 2: Convert to fraction form
13,677,571.20/18,873,403.84 = 7,878,239.04/x - Step 3: Cross multiply
13,677,571.20x = 18,873,403.84 × 7,878,239.04 - Step 4: Simplify right side
13,677,571.20x = 148,689,186,949,973.91 - Step 5: Solve for x
x = 148,689,186,949,973.91/13,677,571.20 - Step 6: Final answer
x = 10,871,022.70
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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.