Finding the Fourth Proportional to 19,644,346.80, 29,466,520.20 and 18,528,320.70
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Solution
The fourth proportional to 19,644,346.80, 29,466,520.20 and 18,528,320.70 is: 27,792,481.05
Step by Step Solution
- Step 1: Write the proportion equation
19,644,346.80 : 29,466,520.20 = 18,528,320.70 : x - Step 2: Convert to fraction form
19,644,346.80/29,466,520.20 = 18,528,320.70/x - Step 3: Cross multiply
19,644,346.80x = 29,466,520.20 × 18,528,320.70 - Step 4: Simplify right side
19,644,346.80x = 545,965,136,178,628.12 - Step 5: Solve for x
x = 545,965,136,178,628.12/19,644,346.80 - Step 6: Final answer
x = 27,792,481.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.