Finding the Fourth Proportional to 21,580,444.74, 29,780,666.19 and 11,790,678.90
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Solution
The fourth proportional to 21,580,444.74, 29,780,666.19 and 11,790,678.90 is: 16,270,946.99
Step by Step Solution
- Step 1: Write the proportion equation
21,580,444.74 : 29,780,666.19 = 11,790,678.90 : x - Step 2: Convert to fraction form
21,580,444.74/29,780,666.19 = 11,790,678.90/x - Step 3: Cross multiply
21,580,444.74x = 29,780,666.19 × 11,790,678.90 - Step 4: Simplify right side
21,580,444.74x = 351,134,272,474,376.44 - Step 5: Solve for x
x = 351,134,272,474,376.44/21,580,444.74 - Step 6: Final answer
x = 16,270,946.99
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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.