Finding the Fourth Proportional to 15,729,161.55, 21,706,916.38 and 8,759,839.06
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Solution
The fourth proportional to 15,729,161.55, 21,706,916.38 and 8,759,839.06 is: 12,088,952.95
Step by Step Solution
- Step 1: Write the proportion equation
15,729,161.55 : 21,706,916.38 = 8,759,839.06 : x - Step 2: Convert to fraction form
15,729,161.55/21,706,916.38 = 8,759,839.06/x - Step 3: Cross multiply
15,729,161.55x = 21,706,916.38 × 8,759,839.06 - Step 4: Simplify right side
15,729,161.55x = 190,149,094,044,511.03 - Step 5: Solve for x
x = 190,149,094,044,511.03/15,729,161.55 - Step 6: Final answer
x = 12,088,952.95
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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.