Finding the Fourth Proportional to 28,564,517.30, 39,418,910.62 and 15,511,668.62
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Solution
The fourth proportional to 28,564,517.30, 39,418,910.62 and 15,511,668.62 is: 21,406,035.76
Step by Step Solution
- Step 1: Write the proportion equation
28,564,517.30 : 39,418,910.62 = 15,511,668.62 : x - Step 2: Convert to fraction form
28,564,517.30/39,418,910.62 = 15,511,668.62/x - Step 3: Cross multiply
28,564,517.30x = 39,418,910.62 × 15,511,668.62 - Step 4: Simplify right side
28,564,517.30x = 611,453,078,662,965 - Step 5: Solve for x
x = 611,453,078,662,965/28,564,517.30 - Step 6: Final answer
x = 21,406,035.76
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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.