Finding the Fourth Proportional to 21,620,522.35, 29,836,319.61 and 11,830,967.68
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Solution
The fourth proportional to 21,620,522.35, 29,836,319.61 and 11,830,967.68 is: 16,326,734.72
Step by Step Solution
- Step 1: Write the proportion equation
21,620,522.35 : 29,836,319.61 = 11,830,967.68 : x - Step 2: Convert to fraction form
21,620,522.35/29,836,319.61 = 11,830,967.68/x - Step 3: Cross multiply
21,620,522.35x = 29,836,319.61 × 11,830,967.68 - Step 4: Simplify right side
21,620,522.35x = 352,992,532,996,060.19 - Step 5: Solve for x
x = 352,992,532,996,060.19/21,620,522.35 - Step 6: Final answer
x = 16,326,734.72
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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.