Finding the Fourth Proportional to 21,405,325.36, 29,539,369.20 and 12,238,160.08
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Solution
The fourth proportional to 21,405,325.36, 29,539,369.20 and 12,238,160.08 is: 16,888,672.46
Step by Step Solution
- Step 1: Write the proportion equation
21,405,325.36 : 29,539,369.20 = 12,238,160.08 : x - Step 2: Convert to fraction form
21,405,325.36/29,539,369.20 = 12,238,160.08/x - Step 3: Cross multiply
21,405,325.36x = 29,539,369.20 × 12,238,160.08 - Step 4: Simplify right side
21,405,325.36x = 361,507,528,931,821.50 - Step 5: Solve for x
x = 361,507,528,931,821.50/21,405,325.36 - Step 6: Final answer
x = 16,888,672.46
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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.