Finding the Fourth Proportional to 15,186,330.15, 20,957,121.96 and 8,572,311.09
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Solution
The fourth proportional to 15,186,330.15, 20,957,121.96 and 8,572,311.09 is: 11,829,781.60
Step by Step Solution
- Step 1: Write the proportion equation
15,186,330.15 : 20,957,121.96 = 8,572,311.09 : x - Step 2: Convert to fraction form
15,186,330.15/20,957,121.96 = 8,572,311.09/x - Step 3: Cross multiply
15,186,330.15x = 20,957,121.96 × 8,572,311.09 - Step 4: Simplify right side
15,186,330.15x = 179,650,968,992,190.53 - Step 5: Solve for x
x = 179,650,968,992,190.53/15,186,330.15 - Step 6: Final answer
x = 11,829,781.60
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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.