Finding the Fourth Proportional to 21,718,329.66, 29,960,208.99 and 13,869,591.66
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Solution
The fourth proportional to 21,718,329.66, 29,960,208.99 and 13,869,591.66 is: 19,132,956.87
Step by Step Solution
- Step 1: Write the proportion equation
21,718,329.66 : 29,960,208.99 = 13,869,591.66 : x - Step 2: Convert to fraction form
21,718,329.66/29,960,208.99 = 13,869,591.66/x - Step 3: Cross multiply
21,718,329.66x = 29,960,208.99 × 13,869,591.66 - Step 4: Simplify right side
21,718,329.66x = 415,535,864,739,561 - Step 5: Solve for x
x = 415,535,864,739,561/21,718,329.66 - Step 6: Final answer
x = 19,132,956.87
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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.