Finding the Fourth Proportional to 19,415,858.20, 29,123,787.30 and 18,219,131.80
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Solution
The fourth proportional to 19,415,858.20, 29,123,787.30 and 18,219,131.80 is: 27,328,697.70
Step by Step Solution
- Step 1: Write the proportion equation
19,415,858.20 : 29,123,787.30 = 18,219,131.80 : x - Step 2: Convert to fraction form
19,415,858.20/29,123,787.30 = 18,219,131.80/x - Step 3: Cross multiply
19,415,858.20x = 29,123,787.30 × 18,219,131.80 - Step 4: Simplify right side
19,415,858.20x = 530,610,119,333,866.19 - Step 5: Solve for x
x = 530,610,119,333,866.19/19,415,858.20 - Step 6: Final answer
x = 27,328,697.70
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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.