Finding the Fourth Proportional to 11,778,235.20, 16,253,866.80 and 6,621,619.68
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Solution
The fourth proportional to 11,778,235.20, 16,253,866.80 and 6,621,619.68 is: 9,137,780.19
Step by Step Solution
- Step 1: Write the proportion equation
11,778,235.20 : 16,253,866.80 = 6,621,619.68 : x - Step 2: Convert to fraction form
11,778,235.20/16,253,866.80 = 6,621,619.68/x - Step 3: Cross multiply
11,778,235.20x = 16,253,866.80 × 6,621,619.68 - Step 4: Simplify right side
11,778,235.20x = 107,626,924,278,978.62 - Step 5: Solve for x
x = 107,626,924,278,978.62/11,778,235.20 - Step 6: Final answer
x = 9,137,780.19
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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.