Finding the Fourth Proportional to 18,722,539.80, 28,083,809.70 and 4,539,115.80
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Solution
The fourth proportional to 18,722,539.80, 28,083,809.70 and 4,539,115.80 is: 6,808,673.70
Step by Step Solution
- Step 1: Write the proportion equation
18,722,539.80 : 28,083,809.70 = 4,539,115.80 : x - Step 2: Convert to fraction form
18,722,539.80/28,083,809.70 = 4,539,115.80/x - Step 3: Cross multiply
18,722,539.80x = 28,083,809.70 × 4,539,115.80 - Step 4: Simplify right side
18,722,539.80x = 127,475,664,333,463.25 - Step 5: Solve for x
x = 127,475,664,333,463.25/18,722,539.80 - Step 6: Final answer
x = 6,808,673.70
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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.