Finding the Fourth Proportional to 15,312,482.88, 21,131,704.89 and 8,787,305.94
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Solution
The fourth proportional to 15,312,482.88, 21,131,704.89 and 8,787,305.94 is: 12,126,756.80
Step by Step Solution
- Step 1: Write the proportion equation
15,312,482.88 : 21,131,704.89 = 8,787,305.94 : x - Step 2: Convert to fraction form
15,312,482.88/21,131,704.89 = 8,787,305.94/x - Step 3: Cross multiply
15,312,482.88x = 21,131,704.89 × 8,787,305.94 - Step 4: Simplify right side
15,312,482.88x = 185,690,755,902,224.03 - Step 5: Solve for x
x = 185,690,755,902,224.03/15,312,482.88 - Step 6: Final answer
x = 12,126,756.80
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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.