Finding the Fourth Proportional to 21,684,808.84, 29,924,757.18 and 12,392,272.31
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Solution
The fourth proportional to 21,684,808.84, 29,924,757.18 and 12,392,272.31 is: 17,101,176.34
Step by Step Solution
- Step 1: Write the proportion equation
21,684,808.84 : 29,924,757.18 = 12,392,272.31 : x - Step 2: Convert to fraction form
21,684,808.84/29,924,757.18 = 12,392,272.31/x - Step 3: Cross multiply
21,684,808.84x = 29,924,757.18 × 12,392,272.31 - Step 4: Simplify right side
21,684,808.84x = 370,835,739,859,999.56 - Step 5: Solve for x
x = 370,835,739,859,999.56/21,684,808.84 - Step 6: Final answer
x = 17,101,176.34
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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.