Finding the Fourth Proportional to 18,128,291.56, 27,193,340.91 and 5,176,363.21
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Solution
The fourth proportional to 18,128,291.56, 27,193,340.91 and 5,176,363.21 is: 7,764,802.82
Step by Step Solution
- Step 1: Write the proportion equation
18,128,291.56 : 27,193,340.91 = 5,176,363.21 : x - Step 2: Convert to fraction form
18,128,291.56/27,193,340.91 = 5,176,363.21/x - Step 3: Cross multiply
18,128,291.56x = 27,193,340.91 × 5,176,363.21 - Step 4: Simplify right side
18,128,291.56x = 140,762,609,443,511.91 - Step 5: Solve for x
x = 140,762,609,443,511.91/18,128,291.56 - Step 6: Final answer
x = 7,764,802.82
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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.