Finding the Fourth Proportional to 28,564,518.80, 39,418,912.68 and 15,511,670.12
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Solution
The fourth proportional to 28,564,518.80, 39,418,912.68 and 15,511,670.12 is: 21,406,037.83
Step by Step Solution
- Step 1: Write the proportion equation
28,564,518.80 : 39,418,912.68 = 15,511,670.12 : x - Step 2: Convert to fraction form
28,564,518.80/39,418,912.68 = 15,511,670.12/x - Step 3: Cross multiply
28,564,518.80x = 39,418,912.68 × 15,511,670.12 - Step 4: Simplify right side
28,564,518.80x = 611,453,169,981,245.12 - Step 5: Solve for x
x = 611,453,169,981,245.12/28,564,518.80 - Step 6: Final answer
x = 21,406,037.83
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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.