Finding the Fourth Proportional to 15,255,428.68, 21,052,646.22 and 8,286,241.96
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Solution
The fourth proportional to 15,255,428.68, 21,052,646.22 and 8,286,241.96 is: 11,435,097.90
Step by Step Solution
- Step 1: Write the proportion equation
15,255,428.68 : 21,052,646.22 = 8,286,241.96 : x - Step 2: Convert to fraction form
15,255,428.68/21,052,646.22 = 8,286,241.96/x - Step 3: Cross multiply
15,255,428.68x = 21,052,646.22 × 8,286,241.96 - Step 4: Simplify right side
15,255,428.68x = 174,447,320,477,199.38 - Step 5: Solve for x
x = 174,447,320,477,199.38/15,255,428.68 - Step 6: Final answer
x = 11,435,097.90
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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.