Finding the Fourth Proportional to 21,470,943.40, 32,181,531.90 and 8,685,125.80
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Solution
The fourth proportional to 21,470,943.40, 32,181,531.90 and 8,685,125.80 is: 13,017,623.30
Step by Step Solution
- Step 1: Write the proportion equation
21,470,943.40 : 32,181,531.90 = 8,685,125.80 : x - Step 2: Convert to fraction form
21,470,943.40/32,181,531.90 = 8,685,125.80/x - Step 3: Cross multiply
21,470,943.40x = 32,181,531.90 × 8,685,125.80 - Step 4: Simplify right side
21,470,943.40x = 279,500,652,988,213.03 - Step 5: Solve for x
x = 279,500,652,988,213.03/21,470,943.40 - Step 6: Final answer
x = 13,017,623.30
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.