Finding the Fourth Proportional to 12,987,293.84, 17,922,486.49 and 7,186,320.08
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Solution
The fourth proportional to 12,987,293.84, 17,922,486.49 and 7,186,320.08 is: 9,917,133.32
Step by Step Solution
- Step 1: Write the proportion equation
12,987,293.84 : 17,922,486.49 = 7,186,320.08 : x - Step 2: Convert to fraction form
12,987,293.84/17,922,486.49 = 7,186,320.08/x - Step 3: Cross multiply
12,987,293.84x = 17,922,486.49 × 7,186,320.08 - Step 4: Simplify right side
12,987,293.84x = 128,796,724,439,037.50 - Step 5: Solve for x
x = 128,796,724,439,037.50/12,987,293.84 - Step 6: Final answer
x = 9,917,133.32
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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.