Finding the Fourth Proportional to 15,340,390.58, 21,170,188.19 and 8,371,517.18
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Solution
The fourth proportional to 15,340,390.58, 21,170,188.19 and 8,371,517.18 is: 11,552,938.83
Step by Step Solution
- Step 1: Write the proportion equation
15,340,390.58 : 21,170,188.19 = 8,371,517.18 : x - Step 2: Convert to fraction form
15,340,390.58/21,170,188.19 = 8,371,517.18/x - Step 3: Cross multiply
15,340,390.58x = 21,170,188.19 × 8,371,517.18 - Step 4: Simplify right side
15,340,390.58x = 177,226,593,988,709.56 - Step 5: Solve for x
x = 177,226,593,988,709.56/15,340,390.58 - Step 6: Final answer
x = 11,552,938.83
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1.5x scale
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.