Finding the Fourth Proportional to 15,578,938.49, 21,497,808.80 and 8,609,532.65
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Solution
The fourth proportional to 15,578,938.49, 21,497,808.80 and 8,609,532.65 is: 11,880,532.60
Step by Step Solution
- Step 1: Write the proportion equation
15,578,938.49 : 21,497,808.80 = 8,609,532.65 : x - Step 2: Convert to fraction form
15,578,938.49/21,497,808.80 = 8,609,532.65/x - Step 3: Cross multiply
15,578,938.49x = 21,497,808.80 × 8,609,532.65 - Step 4: Simplify right side
15,578,938.49x = 185,086,086,616,520.62 - Step 5: Solve for x
x = 185,086,086,616,520.62/15,578,938.49 - Step 6: Final answer
x = 11,880,532.60
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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.