Finding the Fourth Proportional to 20,409,762.65, 28,165,473.99 and 11,242,405.40
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Solution
The fourth proportional to 20,409,762.65, 28,165,473.99 and 11,242,405.40 is: 15,514,520.29
Step by Step Solution
- Step 1: Write the proportion equation
20,409,762.65 : 28,165,473.99 = 11,242,405.40 : x - Step 2: Convert to fraction form
20,409,762.65/28,165,473.99 = 11,242,405.40/x - Step 3: Cross multiply
20,409,762.65x = 28,165,473.99 × 11,242,405.40 - Step 4: Simplify right side
20,409,762.65x = 316,647,676,737,908.12 - Step 5: Solve for x
x = 316,647,676,737,908.12/20,409,762.65 - Step 6: Final answer
x = 15,514,520.29
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.