Finding the Fourth Proportional to 21,120,845.42, 29,159,930.67 and 14,516,805.26
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Solution
The fourth proportional to 21,120,845.42, 29,159,930.67 and 14,516,805.26 is: 20,042,239.15
Step by Step Solution
- Step 1: Write the proportion equation
21,120,845.42 : 29,159,930.67 = 14,516,805.26 : x - Step 2: Convert to fraction form
21,120,845.42/29,159,930.67 = 14,516,805.26/x - Step 3: Cross multiply
21,120,845.42x = 29,159,930.67 × 14,516,805.26 - Step 4: Simplify right side
21,120,845.42x = 423,309,034,931,491.31 - Step 5: Solve for x
x = 423,309,034,931,491.31/21,120,845.42 - Step 6: Final answer
x = 20,042,239.15
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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.