Finding the Fourth Proportional to 21,041,821.80, 29,057,768.12 and 19,895,466.10
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Solution
The fourth proportional to 21,041,821.80, 29,057,768.12 and 19,895,466.10 is: 27,474,704.71
Step by Step Solution
- Step 1: Write the proportion equation
21,041,821.80 : 29,057,768.12 = 19,895,466.10 : x - Step 2: Convert to fraction form
21,041,821.80/29,057,768.12 = 19,895,466.10/x - Step 3: Cross multiply
21,041,821.80x = 29,057,768.12 × 19,895,466.10 - Step 4: Simplify right side
21,041,821.80x = 578,117,840,573,120.75 - Step 5: Solve for x
x = 578,117,840,573,120.75/21,041,821.80 - Step 6: Final answer
x = 27,474,704.71
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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.