Finding the Fourth Proportional to 21,719,964.65, 29,974,068.63 and 11,930,613.84
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Solution
The fourth proportional to 21,719,964.65, 29,974,068.63 and 11,930,613.84 is: 16,464,531.31
Step by Step Solution
- Step 1: Write the proportion equation
21,719,964.65 : 29,974,068.63 = 11,930,613.84 : x - Step 2: Convert to fraction form
21,719,964.65/29,974,068.63 = 11,930,613.84/x - Step 3: Cross multiply
21,719,964.65x = 29,974,068.63 × 11,930,613.84 - Step 4: Simplify right side
21,719,964.65x = 357,609,038,038,187.81 - Step 5: Solve for x
x = 357,609,038,038,187.81/21,719,964.65 - Step 6: Final answer
x = 16,464,531.31
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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.