Finding the Fourth Proportional to 15,004,778.68, 20,706,615.12 and 8,129,261.08
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Solution
The fourth proportional to 15,004,778.68, 20,706,615.12 and 8,129,261.08 is: 11,218,391.42
Step by Step Solution
- Step 1: Write the proportion equation
15,004,778.68 : 20,706,615.12 = 8,129,261.08 : x - Step 2: Convert to fraction form
15,004,778.68/20,706,615.12 = 8,129,261.08/x - Step 3: Cross multiply
15,004,778.68x = 20,706,615.12 × 8,129,261.08 - Step 4: Simplify right side
15,004,778.68x = 168,329,480,393,555.53 - Step 5: Solve for x
x = 168,329,480,393,555.53/15,004,778.68 - Step 6: Final answer
x = 11,218,391.42
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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.