Finding the Fourth Proportional to 21,458,403.09, 29,613,374.98 and 12,292,817.31
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Solution
The fourth proportional to 21,458,403.09, 29,613,374.98 and 12,292,817.31 is: 16,964,533.99
Step by Step Solution
- Step 1: Write the proportion equation
21,458,403.09 : 29,613,374.98 = 12,292,817.31 : x - Step 2: Convert to fraction form
21,458,403.09/29,613,374.98 = 12,292,817.31/x - Step 3: Cross multiply
21,458,403.09x = 29,613,374.98 × 12,292,817.31 - Step 4: Simplify right side
21,458,403.09x = 364,031,808,530,932.88 - Step 5: Solve for x
x = 364,031,808,530,932.88/21,458,403.09 - Step 6: Final answer
x = 16,964,533.99
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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.