Finding the Fourth Proportional to 12,888,886.20, 17,782,310.21 and 7,306,534.18
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Solution
The fourth proportional to 12,888,886.20, 17,782,310.21 and 7,306,534.18 is: 10,080,549.66
Step by Step Solution
- Step 1: Write the proportion equation
12,888,886.20 : 17,782,310.21 = 7,306,534.18 : x - Step 2: Convert to fraction form
12,888,886.20/17,782,310.21 = 7,306,534.18/x - Step 3: Cross multiply
12,888,886.20x = 17,782,310.21 × 7,306,534.18 - Step 4: Simplify right side
12,888,886.20x = 129,927,057,348,727.98 - Step 5: Solve for x
x = 129,927,057,348,727.98/12,888,886.20 - Step 6: Final answer
x = 10,080,549.66
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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.