Finding the Fourth Proportional to 15,037,076.20, 20,751,188.70 and 8,161,561.12
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Solution
The fourth proportional to 15,037,076.20, 20,751,188.70 and 8,161,561.12 is: 11,262,967.12
Step by Step Solution
- Step 1: Write the proportion equation
15,037,076.20 : 20,751,188.70 = 8,161,561.12 : x - Step 2: Convert to fraction form
15,037,076.20/20,751,188.70 = 8,161,561.12/x - Step 3: Cross multiply
15,037,076.20x = 20,751,188.70 × 8,161,561.12 - Step 4: Simplify right side
15,037,076.20x = 169,362,094,887,703.34 - Step 5: Solve for x
x = 169,362,094,887,703.34/15,037,076.20 - Step 6: Final answer
x = 11,262,967.12
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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.