Finding the Fourth Proportional to 13,146,958.40, 19,720,437.60 and 11,131,419.20
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Solution
The fourth proportional to 13,146,958.40, 19,720,437.60 and 11,131,419.20 is: 16,697,128.80
Step by Step Solution
- Step 1: Write the proportion equation
13,146,958.40 : 19,720,437.60 = 11,131,419.20 : x - Step 2: Convert to fraction form
13,146,958.40/19,720,437.60 = 11,131,419.20/x - Step 3: Cross multiply
13,146,958.40x = 19,720,437.60 × 11,131,419.20 - Step 4: Simplify right side
13,146,958.40x = 219,516,457,733,041.94 - Step 5: Solve for x
x = 219,516,457,733,041.94/13,146,958.40 - Step 6: Final answer
x = 16,697,128.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.