Finding the Fourth Proportional to 15,551,968.14, 21,461,729.49 and 8,676,451.62
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Solution
The fourth proportional to 15,551,968.14, 21,461,729.49 and 8,676,451.62 is: 11,973,510.74
Step by Step Solution
- Step 1: Write the proportion equation
15,551,968.14 : 21,461,729.49 = 8,676,451.62 : x - Step 2: Convert to fraction form
15,551,968.14/21,461,729.49 = 8,676,451.62/x - Step 3: Cross multiply
15,551,968.14x = 21,461,729.49 × 8,676,451.62 - Step 4: Simplify right side
15,551,968.14x = 186,211,657,601,512.25 - Step 5: Solve for x
x = 186,211,657,601,512.25/15,551,968.14 - Step 6: Final answer
x = 11,973,510.74
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1.5x scale
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.