Finding the Fourth Proportional to 18,372,959.20, 27,559,438.80 and 8,807,021.20
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Solution
The fourth proportional to 18,372,959.20, 27,559,438.80 and 8,807,021.20 is: 13,210,531.80
Step by Step Solution
- Step 1: Write the proportion equation
18,372,959.20 : 27,559,438.80 = 8,807,021.20 : x - Step 2: Convert to fraction form
18,372,959.20/27,559,438.80 = 8,807,021.20/x - Step 3: Cross multiply
18,372,959.20x = 27,559,438.80 × 8,807,021.20 - Step 4: Simplify right side
18,372,959.20x = 242,716,561,771,702.53 - Step 5: Solve for x
x = 242,716,561,771,702.53/18,372,959.20 - Step 6: Final answer
x = 13,210,531.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.