Finding the Fourth Proportional to 21,286,587.94, 29,379,765.63 and 13,931,706.94
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Solution
The fourth proportional to 21,286,587.94, 29,379,765.63 and 13,931,706.94 is: 19,228,553.02
Step by Step Solution
- Step 1: Write the proportion equation
21,286,587.94 : 29,379,765.63 = 13,931,706.94 : x - Step 2: Convert to fraction form
21,286,587.94/29,379,765.63 = 13,931,706.94/x - Step 3: Cross multiply
21,286,587.94x = 29,379,765.63 × 13,931,706.94 - Step 4: Simplify right side
21,286,587.94x = 409,310,284,723,044.44 - Step 5: Solve for x
x = 409,310,284,723,044.44/21,286,587.94 - Step 6: Final answer
x = 19,228,553.02
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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.