Finding the Fourth Proportional to 19,920,660.43, 27,489,785.64 and 11,099,655.94
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Solution
The fourth proportional to 19,920,660.43, 27,489,785.64 and 11,099,655.94 is: 15,317,120.81
Step by Step Solution
- Step 1: Write the proportion equation
19,920,660.43 : 27,489,785.64 = 11,099,655.94 : x - Step 2: Convert to fraction form
19,920,660.43/27,489,785.64 = 11,099,655.94/x - Step 3: Cross multiply
19,920,660.43x = 27,489,785.64 × 11,099,655.94 - Step 4: Simplify right side
19,920,660.43x = 305,127,162,468,352.69 - Step 5: Solve for x
x = 305,127,162,468,352.69/19,920,660.43 - Step 6: Final answer
x = 15,317,120.81
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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.