Finding the Fourth Proportional to 12,292,071.40, 18,438,107.10 and 11,074,349.80
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Solution
The fourth proportional to 12,292,071.40, 18,438,107.10 and 11,074,349.80 is: 16,611,524.70
Step by Step Solution
- Step 1: Write the proportion equation
12,292,071.40 : 18,438,107.10 = 11,074,349.80 : x - Step 2: Convert to fraction form
12,292,071.40/18,438,107.10 = 11,074,349.80/x - Step 3: Cross multiply
12,292,071.40x = 18,438,107.10 × 11,074,349.80 - Step 4: Simplify right side
12,292,071.40x = 204,190,047,675,263.62 - Step 5: Solve for x
x = 204,190,047,675,263.62/12,292,071.40 - Step 6: Final answer
x = 16,611,524.70
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.