Finding the Fourth Proportional to 11,333,787.40, 15,640,991.94 and 6,438,920.44
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Solution
The fourth proportional to 11,333,787.40, 15,640,991.94 and 6,438,920.44 is: 8,885,917.76
Step by Step Solution
- Step 1: Write the proportion equation
11,333,787.40 : 15,640,991.94 = 6,438,920.44 : x - Step 2: Convert to fraction form
11,333,787.40/15,640,991.94 = 6,438,920.44/x - Step 3: Cross multiply
11,333,787.40x = 15,640,991.94 × 6,438,920.44 - Step 4: Simplify right side
11,333,787.40x = 100,711,102,704,341.25 - Step 5: Solve for x
x = 100,711,102,704,341.25/11,333,787.40 - Step 6: Final answer
x = 8,885,917.76
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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.