Finding the Fourth Proportional to 15,531,421.08, 21,433,425.83 and 8,561,945.53
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Solution
The fourth proportional to 15,531,421.08, 21,433,425.83 and 8,561,945.53 is: 11,815,520.51
Step by Step Solution
- Step 1: Write the proportion equation
15,531,421.08 : 21,433,425.83 = 8,561,945.53 : x - Step 2: Convert to fraction form
15,531,421.08/21,433,425.83 = 8,561,945.53/x - Step 3: Cross multiply
15,531,421.08x = 21,433,425.83 × 8,561,945.53 - Step 4: Simplify right side
15,531,421.08x = 183,511,824,349,183.06 - Step 5: Solve for x
x = 183,511,824,349,183.06/15,531,421.08 - Step 6: Final answer
x = 11,815,520.51
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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.