Finding the Fourth Proportional to 10,752,090.40, 16,128,135.60 and 9,128,461.60
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Solution
The fourth proportional to 10,752,090.40, 16,128,135.60 and 9,128,461.60 is: 13,692,692.40
Step by Step Solution
- Step 1: Write the proportion equation
10,752,090.40 : 16,128,135.60 = 9,128,461.60 : x - Step 2: Convert to fraction form
10,752,090.40/16,128,135.60 = 9,128,461.60/x - Step 3: Cross multiply
10,752,090.40x = 16,128,135.60 × 9,128,461.60 - Step 4: Simplify right side
10,752,090.40x = 147,225,066,504,192.94 - Step 5: Solve for x
x = 147,225,066,504,192.94/10,752,090.40 - Step 6: Final answer
x = 13,692,692.40
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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.