Finding the Fourth Proportional to 21,282,961.64, 29,370,486.55 and 11,493,405.02
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Solution
The fourth proportional to 21,282,961.64, 29,370,486.55 and 11,493,405.02 is: 15,860,898.65
Step by Step Solution
- Step 1: Write the proportion equation
21,282,961.64 : 29,370,486.55 = 11,493,405.02 : x - Step 2: Convert to fraction form
21,282,961.64/29,370,486.55 = 11,493,405.02/x - Step 3: Cross multiply
21,282,961.64x = 29,370,486.55 × 11,493,405.02 - Step 4: Simplify right side
21,282,961.64x = 337,566,897,598,305.19 - Step 5: Solve for x
x = 337,566,897,598,305.19/21,282,961.64 - Step 6: Final answer
x = 15,860,898.65
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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.