Finding the Fourth Proportional to 18,240,385.78, 27,345,125.67 and 7,997,482.90
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Solution
The fourth proportional to 18,240,385.78, 27,345,125.67 and 7,997,482.90 is: 11,989,448.99
Step by Step Solution
- Step 1: Write the proportion equation
18,240,385.78 : 27,345,125.67 = 7,997,482.90 : x - Step 2: Convert to fraction form
18,240,385.78/27,345,125.67 = 7,997,482.90/x - Step 3: Cross multiply
18,240,385.78x = 27,345,125.67 × 7,997,482.90 - Step 4: Simplify right side
18,240,385.78x = 218,692,174,944,176.06 - Step 5: Solve for x
x = 218,692,174,944,176.06/18,240,385.78 - Step 6: Final answer
x = 11,989,448.99
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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.