Finding the Fourth Proportional to 15,614,878.51, 21,549,205.86 and 8,645,556.09
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Solution
The fourth proportional to 15,614,878.51, 21,549,205.86 and 8,645,556.09 is: 11,931,240.32
Step by Step Solution
- Step 1: Write the proportion equation
15,614,878.51 : 21,549,205.86 = 8,645,556.09 : x - Step 2: Convert to fraction form
15,614,878.51/21,549,205.86 = 8,645,556.09/x - Step 3: Cross multiply
15,614,878.51x = 21,549,205.86 × 8,645,556.09 - Step 4: Simplify right side
15,614,878.51x = 186,304,867,957,586.69 - Step 5: Solve for x
x = 186,304,867,957,586.69/15,614,878.51 - Step 6: Final answer
x = 11,931,240.32
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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.