Finding the Fourth Proportional to 15,863,639.68, 21,892,146.24 and 8,620,762.24
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Solution
The fourth proportional to 15,863,639.68, 21,892,146.24 and 8,620,762.24 is: 11,896,827.68
Step by Step Solution
- Step 1: Write the proportion equation
15,863,639.68 : 21,892,146.24 = 8,620,762.24 : x - Step 2: Convert to fraction form
15,863,639.68/21,892,146.24 = 8,620,762.24/x - Step 3: Cross multiply
15,863,639.68x = 21,892,146.24 × 8,620,762.24 - Step 4: Simplify right side
15,863,639.68x = 188,726,987,658,349.97 - Step 5: Solve for x
x = 188,726,987,658,349.97/15,863,639.68 - Step 6: Final answer
x = 11,896,827.68
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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.