Finding the Fourth Proportional to 11,240,128.70, 15,511,753.74 and 6,888,374.61
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Solution
The fourth proportional to 11,240,128.70, 15,511,753.74 and 6,888,374.61 is: 9,506,187.47
Step by Step Solution
- Step 1: Write the proportion equation
11,240,128.70 : 15,511,753.74 = 6,888,374.61 : x - Step 2: Convert to fraction form
11,240,128.70/15,511,753.74 = 6,888,374.61/x - Step 3: Cross multiply
11,240,128.70x = 15,511,753.74 × 6,888,374.61 - Step 4: Simplify right side
11,240,128.70x = 106,850,770,619,188.55 - Step 5: Solve for x
x = 106,850,770,619,188.55/11,240,128.70 - Step 6: Final answer
x = 9,506,187.47
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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.