Finding the Fourth Proportional to 21,458,537.85, 29,613,560.94 and 12,292,952.07
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Solution
The fourth proportional to 21,458,537.85, 29,613,560.94 and 12,292,952.07 is: 16,964,719.95
Step by Step Solution
- Step 1: Write the proportion equation
21,458,537.85 : 29,613,560.94 = 12,292,952.07 : x - Step 2: Convert to fraction form
21,458,537.85/29,613,560.94 = 12,292,952.07/x - Step 3: Cross multiply
21,458,537.85x = 29,613,560.94 × 12,292,952.07 - Step 4: Simplify right side
21,458,537.85x = 364,038,085,257,444.19 - Step 5: Solve for x
x = 364,038,085,257,444.19/21,458,537.85 - Step 6: Final answer
x = 16,964,719.95
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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.