Finding the Fourth Proportional to 15,304,651.68, 21,121,911.12 and 11,430,446.82
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Solution
The fourth proportional to 15,304,651.68, 21,121,911.12 and 11,430,446.82 is: 15,775,130.78
Step by Step Solution
- Step 1: Write the proportion equation
15,304,651.68 : 21,121,911.12 = 11,430,446.82 : x - Step 2: Convert to fraction form
15,304,651.68/21,121,911.12 = 11,430,446.82/x - Step 3: Cross multiply
15,304,651.68x = 21,121,911.12 × 11,430,446.82 - Step 4: Simplify right side
15,304,651.68x = 241,432,881,793,926.66 - Step 5: Solve for x
x = 241,432,881,793,926.66/15,304,651.68 - Step 6: Final answer
x = 15,775,130.78
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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.