Finding the Fourth Proportional to 20,479,157.74, 28,260,698.07 and 11,311,603.66
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Solution
The fourth proportional to 20,479,157.74, 28,260,698.07 and 11,311,603.66 is: 15,609,715.00
Step by Step Solution
- Step 1: Write the proportion equation
20,479,157.74 : 28,260,698.07 = 11,311,603.66 : x - Step 2: Convert to fraction form
20,479,157.74/28,260,698.07 = 11,311,603.66/x - Step 3: Cross multiply
20,479,157.74x = 28,260,698.07 × 11,311,603.66 - Step 4: Simplify right side
20,479,157.74x = 319,673,815,722,766.94 - Step 5: Solve for x
x = 319,673,815,722,766.94/20,479,157.74 - Step 6: Final answer
x = 15,609,715.00
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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.