Finding the Fourth Proportional to 13,418,813.51, 18,517,473.73 and 7,307,107.91
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Solution
The fourth proportional to 13,418,813.51, 18,517,473.73 and 7,307,107.91 is: 10,083,542.68
Step by Step Solution
- Step 1: Write the proportion equation
13,418,813.51 : 18,517,473.73 = 7,307,107.91 : x - Step 2: Convert to fraction form
13,418,813.51/18,517,473.73 = 7,307,107.91/x - Step 3: Cross multiply
13,418,813.51x = 18,517,473.73 × 7,307,107.91 - Step 4: Simplify right side
13,418,813.51x = 135,309,178,765,700.20 - Step 5: Solve for x
x = 135,309,178,765,700.20/13,418,813.51 - Step 6: Final answer
x = 10,083,542.68
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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.