Finding the Fourth Proportional to 21,418,979.70, 32,081,230.35 and 12,884,430.90
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Solution
The fourth proportional to 21,418,979.70, 32,081,230.35 and 12,884,430.90 is: 19,298,229.95
Step by Step Solution
- Step 1: Write the proportion equation
21,418,979.70 : 32,081,230.35 = 12,884,430.90 : x - Step 2: Convert to fraction form
21,418,979.70/32,081,230.35 = 12,884,430.90/x - Step 3: Cross multiply
21,418,979.70x = 32,081,230.35 × 12,884,430.90 - Step 4: Simplify right side
21,418,979.70x = 413,348,395,631,557.88 - Step 5: Solve for x
x = 413,348,395,631,557.88/21,418,979.70 - Step 6: Final answer
x = 19,298,229.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.