Finding the Fourth Proportional to 21,648,736.80, 29,851,315.70 and 13,795,809.08
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Solution
The fourth proportional to 21,648,736.80, 29,851,315.70 and 13,795,809.08 is: 19,022,959.90
Step by Step Solution
- Step 1: Write the proportion equation
21,648,736.80 : 29,851,315.70 = 13,795,809.08 : x - Step 2: Convert to fraction form
21,648,736.80/29,851,315.70 = 13,795,809.08/x - Step 3: Cross multiply
21,648,736.80x = 29,851,315.70 × 13,795,809.08 - Step 4: Simplify right side
21,648,736.80x = 411,823,051,965,770.94 - Step 5: Solve for x
x = 411,823,051,965,770.94/21,648,736.80 - Step 6: Final answer
x = 19,022,959.90
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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.