Finding the Fourth Proportional to 12,562,668.81, 17,336,639.75 and 7,405,722.09
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Solution
The fourth proportional to 12,562,668.81, 17,336,639.75 and 7,405,722.09 is: 10,219,988.91
Step by Step Solution
- Step 1: Write the proportion equation
12,562,668.81 : 17,336,639.75 = 7,405,722.09 : x - Step 2: Convert to fraction form
12,562,668.81/17,336,639.75 = 7,405,722.09/x - Step 3: Cross multiply
12,562,668.81x = 17,336,639.75 × 7,405,722.09 - Step 4: Simplify right side
12,562,668.81x = 128,390,335,925,918.47 - Step 5: Solve for x
x = 128,390,335,925,918.47/12,562,668.81 - Step 6: Final answer
x = 10,219,988.91
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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.