Finding the Fourth Proportional to 10,238,743.40, 15,358,115.10 and 9,211,290.80
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Solution
The fourth proportional to 10,238,743.40, 15,358,115.10 and 9,211,290.80 is: 13,816,936.20
Step by Step Solution
- Step 1: Write the proportion equation
10,238,743.40 : 15,358,115.10 = 9,211,290.80 : x - Step 2: Convert to fraction form
10,238,743.40/15,358,115.10 = 9,211,290.80/x - Step 3: Cross multiply
10,238,743.40x = 15,358,115.10 × 9,211,290.80 - Step 4: Simplify right side
10,238,743.40x = 141,468,064,325,971.09 - Step 5: Solve for x
x = 141,468,064,325,971.09/10,238,743.40 - Step 6: Final answer
x = 13,816,936.20
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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.