Finding the Fourth Proportional to 19,809,631.20, 29,697,166.80 and 7,687,365.60
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Solution
The fourth proportional to 19,809,631.20, 29,697,166.80 and 7,687,365.60 is: 11,524,342.69
Step by Step Solution
- Step 1: Write the proportion equation
19,809,631.20 : 29,697,166.80 = 7,687,365.60 : x - Step 2: Convert to fraction form
19,809,631.20/29,697,166.80 = 7,687,365.60/x - Step 3: Cross multiply
19,809,631.20x = 29,697,166.80 × 7,687,365.60 - Step 4: Simplify right side
19,809,631.20x = 228,292,978,475,782.06 - Step 5: Solve for x
x = 228,292,978,475,782.06/19,809,631.20 - Step 6: Final answer
x = 11,524,342.69
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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.