Finding the Fourth Proportional to 15,729,163.68, 21,706,919.32 and 8,759,841.19
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Solution
The fourth proportional to 15,729,163.68, 21,706,919.32 and 8,759,841.19 is: 12,088,955.89
Step by Step Solution
- Step 1: Write the proportion equation
15,729,163.68 : 21,706,919.32 = 8,759,841.19 : x - Step 2: Convert to fraction form
15,729,163.68/21,706,919.32 = 8,759,841.19/x - Step 3: Cross multiply
15,729,163.68x = 21,706,919.32 × 8,759,841.19 - Step 4: Simplify right side
15,729,163.68x = 190,149,165,967,342.78 - Step 5: Solve for x
x = 190,149,165,967,342.78/15,729,163.68 - Step 6: Final answer
x = 12,088,955.89
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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.