Finding the Fourth Proportional to 20,343,454.75, 28,073,978.90 and 11,176,687.99
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Solution
The fourth proportional to 20,343,454.75, 28,073,978.90 and 11,176,687.99 is: 15,423,835.66
Step by Step Solution
- Step 1: Write the proportion equation
20,343,454.75 : 28,073,978.90 = 11,176,687.99 : x - Step 2: Convert to fraction form
20,343,454.75/28,073,978.90 = 11,176,687.99/x - Step 3: Cross multiply
20,343,454.75x = 28,073,978.90 × 11,176,687.99 - Step 4: Simplify right side
20,343,454.75x = 313,774,102,747,260 - Step 5: Solve for x
x = 313,774,102,747,260/20,343,454.75 - Step 6: Final answer
x = 15,423,835.66
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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.