Finding the Fourth Proportional to 15,307,322.49, 21,124,106.19 and 8,431,804.55
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Solution
The fourth proportional to 15,307,322.49, 21,124,106.19 and 8,431,804.55 is: 11,635,890.91
Step by Step Solution
- Step 1: Write the proportion equation
15,307,322.49 : 21,124,106.19 = 8,431,804.55 : x - Step 2: Convert to fraction form
15,307,322.49/21,124,106.19 = 8,431,804.55/x - Step 3: Cross multiply
15,307,322.49x = 21,124,106.19 × 8,431,804.55 - Step 4: Simplify right side
15,307,322.49x = 178,114,334,539,745.59 - Step 5: Solve for x
x = 178,114,334,539,745.59/15,307,322.49 - Step 6: Final answer
x = 11,635,890.91
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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.