Finding the Fourth Proportional to 11,638,321.40, 16,060,877.91 and 6,746,378.45
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Solution
The fourth proportional to 11,638,321.40, 16,060,877.91 and 6,746,378.45 is: 9,309,998.99
Step by Step Solution
- Step 1: Write the proportion equation
11,638,321.40 : 16,060,877.91 = 6,746,378.45 : x - Step 2: Convert to fraction form
11,638,321.40/16,060,877.91 = 6,746,378.45/x - Step 3: Cross multiply
11,638,321.40x = 16,060,877.91 × 6,746,378.45 - Step 4: Simplify right side
11,638,321.40x = 108,352,760,539,800.66 - Step 5: Solve for x
x = 108,352,760,539,800.66/11,638,321.40 - Step 6: Final answer
x = 9,309,998.99
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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.