Finding the Fourth Proportional to 13,042,437.62, 17,997,860.77 and 7,240,845.68
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Solution
The fourth proportional to 13,042,437.62, 17,997,860.77 and 7,240,845.68 is: 9,991,976.68
Step by Step Solution
- Step 1: Write the proportion equation
13,042,437.62 : 17,997,860.77 = 7,240,845.68 : x - Step 2: Convert to fraction form
13,042,437.62/17,997,860.77 = 7,240,845.68/x - Step 3: Cross multiply
13,042,437.62x = 17,997,860.77 × 7,240,845.68 - Step 4: Simplify right side
13,042,437.62x = 130,319,732,436,076.78 - Step 5: Solve for x
x = 130,319,732,436,076.78/13,042,437.62 - Step 6: Final answer
x = 9,991,976.68
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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.