Finding the Fourth Proportional to 21,069,561.60, 29,078,354.70 and 11,902,794.84
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Solution
The fourth proportional to 21,069,561.60, 29,078,354.70 and 11,902,794.84 is: 16,427,189.94
Step by Step Solution
- Step 1: Write the proportion equation
21,069,561.60 : 29,078,354.70 = 11,902,794.84 : x - Step 2: Convert to fraction form
21,069,561.60/29,078,354.70 = 11,902,794.84/x - Step 3: Cross multiply
21,069,561.60x = 29,078,354.70 × 11,902,794.84 - Step 4: Simplify right side
21,069,561.60x = 346,113,690,278,849.75 - Step 5: Solve for x
x = 346,113,690,278,849.75/21,069,561.60 - Step 6: Final answer
x = 16,427,189.94
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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.