Finding the Fourth Proportional to 15,719,989.14, 21,693,431.49 and 8,750,556.18
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Solution
The fourth proportional to 15,719,989.14, 21,693,431.49 and 8,750,556.18 is: 12,075,682.07
Step by Step Solution
- Step 1: Write the proportion equation
15,719,989.14 : 21,693,431.49 = 8,750,556.18 : x - Step 2: Convert to fraction form
15,719,989.14/21,693,431.49 = 8,750,556.18/x - Step 3: Cross multiply
15,719,989.14x = 21,693,431.49 × 8,750,556.18 - Step 4: Simplify right side
15,719,989.14x = 189,829,590,990,226.09 - Step 5: Solve for x
x = 189,829,590,990,226.09/15,719,989.14 - Step 6: Final answer
x = 12,075,682.07
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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.