Finding the Fourth Proportional to 18,403,985.40, 27,605,718.90 and 8,306,590.20
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Solution
The fourth proportional to 18,403,985.40, 27,605,718.90 and 8,306,590.20 is: 12,459,768.31
Step by Step Solution
- Step 1: Write the proportion equation
18,403,985.40 : 27,605,718.90 = 8,306,590.20 : x - Step 2: Convert to fraction form
18,403,985.40/27,605,718.90 = 8,306,590.20/x - Step 3: Cross multiply
18,403,985.40x = 27,605,718.90 × 8,306,590.20 - Step 4: Simplify right side
18,403,985.40x = 229,309,394,078,694.78 - Step 5: Solve for x
x = 229,309,394,078,694.78/18,403,985.40 - Step 6: Final answer
x = 12,459,768.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.