Finding the Fourth Proportional to 11,998,406.61, 16,557,683.31 and 6,491,660.63
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Solution
The fourth proportional to 11,998,406.61, 16,557,683.31 and 6,491,660.63 is: 8,958,427.92
Step by Step Solution
- Step 1: Write the proportion equation
11,998,406.61 : 16,557,683.31 = 6,491,660.63 : x - Step 2: Convert to fraction form
11,998,406.61/16,557,683.31 = 6,491,660.63/x - Step 3: Cross multiply
11,998,406.61x = 16,557,683.31 × 6,491,660.63 - Step 4: Simplify right side
11,998,406.61x = 107,486,860,784,746.67 - Step 5: Solve for x
x = 107,486,860,784,746.67/11,998,406.61 - Step 6: Final answer
x = 8,958,427.92
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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.