Finding the Fourth Proportional to 28,397,649.11, 39,188,754.86 and 15,344,907.75
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Solution
The fourth proportional to 28,397,649.11, 39,188,754.86 and 15,344,907.75 is: 21,175,972.20
Step by Step Solution
- Step 1: Write the proportion equation
28,397,649.11 : 39,188,754.86 = 15,344,907.75 : x - Step 2: Convert to fraction form
28,397,649.11/39,188,754.86 = 15,344,907.75/x - Step 3: Cross multiply
28,397,649.11x = 39,188,754.86 × 15,344,907.75 - Step 4: Simplify right side
28,397,649.11x = 601,347,828,087,339.62 - Step 5: Solve for x
x = 601,347,828,087,339.62/28,397,649.11 - Step 6: Final answer
x = 21,175,972.20
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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.