Finding the Fourth Proportional to 15,578,935.99, 21,497,805.34 and 8,609,530.14
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Solution
The fourth proportional to 15,578,935.99, 21,497,805.34 and 8,609,530.14 is: 11,880,529.14
Step by Step Solution
- Step 1: Write the proportion equation
15,578,935.99 : 21,497,805.34 = 8,609,530.14 : x - Step 2: Convert to fraction form
15,578,935.99/21,497,805.34 = 8,609,530.14/x - Step 3: Cross multiply
15,578,935.99x = 21,497,805.34 × 8,609,530.14 - Step 4: Simplify right side
15,578,935.99x = 185,086,003,018,582.97 - Step 5: Solve for x
x = 185,086,003,018,582.97/15,578,935.99 - Step 6: Final answer
x = 11,880,529.14
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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.