Finding the Fourth Proportional to 11,486,986.99, 15,852,826.19 and 7,018,455.28
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Solution
The fourth proportional to 11,486,986.99, 15,852,826.19 and 7,018,455.28 is: 9,685,947.39
Step by Step Solution
- Step 1: Write the proportion equation
11,486,986.99 : 15,852,826.19 = 7,018,455.28 : x - Step 2: Convert to fraction form
11,486,986.99/15,852,826.19 = 7,018,455.28/x - Step 3: Cross multiply
11,486,986.99x = 15,852,826.19 × 7,018,455.28 - Step 4: Simplify right side
11,486,986.99x = 111,262,351,644,287.09 - Step 5: Solve for x
x = 111,262,351,644,287.09/11,486,986.99 - Step 6: Final answer
x = 9,685,947.39
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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.