Finding the Fourth Proportional to 21,216,744.69, 29,286,276.09 and 13,784,575.11
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Solution
The fourth proportional to 21,216,744.69, 29,286,276.09 and 13,784,575.11 is: 19,027,370.99
Step by Step Solution
- Step 1: Write the proportion equation
21,216,744.69 : 29,286,276.09 = 13,784,575.11 : x - Step 2: Convert to fraction form
21,216,744.69/29,286,276.09 = 13,784,575.11/x - Step 3: Cross multiply
21,216,744.69x = 29,286,276.09 × 13,784,575.11 - Step 4: Simplify right side
21,216,744.69x = 403,698,872,454,802.12 - Step 5: Solve for x
x = 403,698,872,454,802.12/21,216,744.69 - Step 6: Final answer
x = 19,027,370.99
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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.