Finding the Fourth Proportional to 21,387,750.20, 32,081,625.30 and 19,876,095.80
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Solution
The fourth proportional to 21,387,750.20, 32,081,625.30 and 19,876,095.80 is: 29,814,143.70
Step by Step Solution
- Step 1: Write the proportion equation
21,387,750.20 : 32,081,625.30 = 19,876,095.80 : x - Step 2: Convert to fraction form
21,387,750.20/32,081,625.30 = 19,876,095.80/x - Step 3: Cross multiply
21,387,750.20x = 32,081,625.30 × 19,876,095.80 - Step 4: Simplify right side
21,387,750.20x = 637,657,457,882,503.75 - Step 5: Solve for x
x = 637,657,457,882,503.75/21,387,750.20 - Step 6: Final answer
x = 29,814,143.70
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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.