Finding the Fourth Proportional to 18,356,420.87, 27,537,768.21 and 7,567,824.12
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Solution
The fourth proportional to 18,356,420.87, 27,537,768.21 and 7,567,824.12 is: 11,353,029.44
Step by Step Solution
- Step 1: Write the proportion equation
18,356,420.87 : 27,537,768.21 = 7,567,824.12 : x - Step 2: Convert to fraction form
18,356,420.87/27,537,768.21 = 7,567,824.12/x - Step 3: Cross multiply
18,356,420.87x = 27,537,768.21 × 7,567,824.12 - Step 4: Simplify right side
18,356,420.87x = 208,400,986,470,607.25 - Step 5: Solve for x
x = 208,400,986,470,607.25/18,356,420.87 - Step 6: Final answer
x = 11,353,029.44
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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.