Finding the Fourth Proportional to 21,422,537.12, 29,562,678.98 and 12,602,941.58
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Solution
The fourth proportional to 21,422,537.12, 29,562,678.98 and 12,602,941.58 is: 17,391,810.97
Step by Step Solution
- Step 1: Write the proportion equation
21,422,537.12 : 29,562,678.98 = 12,602,941.58 : x - Step 2: Convert to fraction form
21,422,537.12/29,562,678.98 = 12,602,941.58/x - Step 3: Cross multiply
21,422,537.12x = 29,562,678.98 × 12,602,941.58 - Step 4: Simplify right side
21,422,537.12x = 372,576,716,099,063.94 - Step 5: Solve for x
x = 372,576,716,099,063.94/21,422,537.12 - Step 6: Final answer
x = 17,391,810.97
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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.