Finding the Fourth Proportional to 19,860,449.41, 27,419,647.75 and 15,747,096.07
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Solution
The fourth proportional to 19,860,449.41, 27,419,647.75 and 15,747,096.07 is: 21,740,687.65
Step by Step Solution
- Step 1: Write the proportion equation
19,860,449.41 : 27,419,647.75 = 15,747,096.07 : x - Step 2: Convert to fraction form
19,860,449.41/27,419,647.75 = 15,747,096.07/x - Step 3: Cross multiply
19,860,449.41x = 27,419,647.75 × 15,747,096.07 - Step 4: Simplify right side
19,860,449.41x = 431,779,827,187,711.06 - Step 5: Solve for x
x = 431,779,827,187,711.06/19,860,449.41 - Step 6: Final answer
x = 21,740,687.65
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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.