Finding the Fourth Proportional to 21,707,914.65, 29,956,981.16 and 11,918,992.88
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Solution
The fourth proportional to 21,707,914.65, 29,956,981.16 and 11,918,992.88 is: 16,448,242.53
Step by Step Solution
- Step 1: Write the proportion equation
21,707,914.65 : 29,956,981.16 = 11,918,992.88 : x - Step 2: Convert to fraction form
21,707,914.65/29,956,981.16 = 11,918,992.88/x - Step 3: Cross multiply
21,707,914.65x = 29,956,981.16 × 11,918,992.88 - Step 4: Simplify right side
21,707,914.65x = 357,057,045,032,346.75 - Step 5: Solve for x
x = 357,057,045,032,346.75/21,707,914.65 - Step 6: Final answer
x = 16,448,242.53
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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.