Finding the Fourth Proportional to 15,313,680.40, 21,131,926.76 and 8,437,777.68
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Solution
The fourth proportional to 15,313,680.40, 21,131,926.76 and 8,437,777.68 is: 11,643,608.54
Step by Step Solution
- Step 1: Write the proportion equation
15,313,680.40 : 21,131,926.76 = 8,437,777.68 : x - Step 2: Convert to fraction form
15,313,680.40/21,131,926.76 = 8,437,777.68/x - Step 3: Cross multiply
15,313,680.40x = 21,131,926.76 × 8,437,777.68 - Step 4: Simplify right side
15,313,680.40x = 178,306,499,950,922.72 - Step 5: Solve for x
x = 178,306,499,950,922.72/15,313,680.40 - Step 6: Final answer
x = 11,643,608.54
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.