Finding the Fourth Proportional to 18,686,943.70, 28,006,795.95 and 9,081,639.70
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Solution
The fourth proportional to 18,686,943.70, 28,006,795.95 and 9,081,639.70 is: 13,610,980.70
Step by Step Solution
- Step 1: Write the proportion equation
18,686,943.70 : 28,006,795.95 = 9,081,639.70 : x - Step 2: Convert to fraction form
18,686,943.70/28,006,795.95 = 9,081,639.70/x - Step 3: Cross multiply
18,686,943.70x = 28,006,795.95 × 9,081,639.70 - Step 4: Simplify right side
18,686,943.70x = 254,347,629,969,319.19 - Step 5: Solve for x
x = 254,347,629,969,319.19/18,686,943.70 - Step 6: Final answer
x = 13,610,980.70
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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.