Finding the Fourth Proportional to 12,738,899.77, 17,580,179.35 and 7,232,787.09
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Solution
The fourth proportional to 12,738,899.77, 17,580,179.35 and 7,232,787.09 is: 9,981,528.75
Step by Step Solution
- Step 1: Write the proportion equation
12,738,899.77 : 17,580,179.35 = 7,232,787.09 : x - Step 2: Convert to fraction form
12,738,899.77/17,580,179.35 = 7,232,787.09/x - Step 3: Cross multiply
12,738,899.77x = 17,580,179.35 × 7,232,787.09 - Step 4: Simplify right side
12,738,899.77x = 127,153,694,242,564.59 - Step 5: Solve for x
x = 127,153,694,242,564.59/12,738,899.77 - Step 6: Final answer
x = 9,981,528.75
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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.