Finding the Fourth Proportional to 20,618,541.90, 28,451,922.84 and 11,917,277.82
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Solution
The fourth proportional to 20,618,541.90, 28,451,922.84 and 11,917,277.82 is: 16,444,881.05
Step by Step Solution
- Step 1: Write the proportion equation
20,618,541.90 : 28,451,922.84 = 11,917,277.82 : x - Step 2: Convert to fraction form
20,618,541.90/28,451,922.84 = 11,917,277.82/x - Step 3: Cross multiply
20,618,541.90x = 28,451,922.84 × 11,917,277.82 - Step 4: Simplify right side
20,618,541.90x = 339,069,468,997,483.44 - Step 5: Solve for x
x = 339,069,468,997,483.44/20,618,541.90 - Step 6: Final answer
x = 16,444,881.05
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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.