Finding the Fourth Proportional to 21,420,642.08, 29,540,219.28 and 14,065,497.92
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Solution
The fourth proportional to 21,420,642.08, 29,540,219.28 and 14,065,497.92 is: 19,397,079.29
Step by Step Solution
- Step 1: Write the proportion equation
21,420,642.08 : 29,540,219.28 = 14,065,497.92 : x - Step 2: Convert to fraction form
21,420,642.08/29,540,219.28 = 14,065,497.92/x - Step 3: Cross multiply
21,420,642.08x = 29,540,219.28 × 14,065,497.92 - Step 4: Simplify right side
21,420,642.08x = 415,497,892,839,183.94 - Step 5: Solve for x
x = 415,497,892,839,183.94/21,420,642.08 - Step 6: Final answer
x = 19,397,079.29
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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.