Finding the Fourth Proportional to 15,815,531.58, 21,825,197.19 and 8,939,772.06
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Solution
The fourth proportional to 15,815,531.58, 21,825,197.19 and 8,939,772.06 is: 12,336,751.82
Step by Step Solution
- Step 1: Write the proportion equation
15,815,531.58 : 21,825,197.19 = 8,939,772.06 : x - Step 2: Convert to fraction form
15,815,531.58/21,825,197.19 = 8,939,772.06/x - Step 3: Cross multiply
15,815,531.58x = 21,825,197.19 × 8,939,772.06 - Step 4: Simplify right side
15,815,531.58x = 195,112,288,043,152.53 - Step 5: Solve for x
x = 195,112,288,043,152.53/15,815,531.58 - Step 6: Final answer
x = 12,336,751.82
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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.