Finding the Fourth Proportional to 21,906,764.80, 30,221,277.60 and 14,174,327.68
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Solution
The fourth proportional to 21,906,764.80, 30,221,277.60 and 14,174,327.68 is: 19,554,064.49
Step by Step Solution
- Step 1: Write the proportion equation
21,906,764.80 : 30,221,277.60 = 14,174,327.68 : x - Step 2: Convert to fraction form
21,906,764.80/30,221,277.60 = 14,174,327.68/x - Step 3: Cross multiply
21,906,764.80x = 30,221,277.60 × 14,174,327.68 - Step 4: Simplify right side
21,906,764.80x = 428,366,291,610,644 - Step 5: Solve for x
x = 428,366,291,610,644/21,906,764.80 - Step 6: Final answer
x = 19,554,064.49
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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.