Finding the Fourth Proportional to 13,388,329.84, 18,476,284.90 and 7,586,918.68
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Solution
The fourth proportional to 13,388,329.84, 18,476,284.90 and 7,586,918.68 is: 10,470,168.62
Step by Step Solution
- Step 1: Write the proportion equation
13,388,329.84 : 18,476,284.90 = 7,586,918.68 : x - Step 2: Convert to fraction form
13,388,329.84/18,476,284.90 = 7,586,918.68/x - Step 3: Cross multiply
13,388,329.84x = 18,476,284.90 × 7,586,918.68 - Step 4: Simplify right side
13,388,329.84x = 140,178,070,979,653.94 - Step 5: Solve for x
x = 140,178,070,979,653.94/13,388,329.84 - Step 6: Final answer
x = 10,470,168.62
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1.5x scale
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.