Finding the Fourth Proportional to 21,652,694.61, 29,880,717.87 and 11,863,509.66
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Solution
The fourth proportional to 21,652,694.61, 29,880,717.87 and 11,863,509.66 is: 16,371,642.95
Step by Step Solution
- Step 1: Write the proportion equation
21,652,694.61 : 29,880,717.87 = 11,863,509.66 : x - Step 2: Convert to fraction form
21,652,694.61/29,880,717.87 = 11,863,509.66/x - Step 3: Cross multiply
21,652,694.61x = 29,880,717.87 × 11,863,509.66 - Step 4: Simplify right side
21,652,694.61x = 354,490,185,098,479.62 - Step 5: Solve for x
x = 354,490,185,098,479.62/21,652,694.61 - Step 6: Final answer
x = 16,371,642.95
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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.