Finding the Fourth Proportional to 11,257,620.84, 15,537,184.20 and 7,128,035.82
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Solution
The fourth proportional to 11,257,620.84, 15,537,184.20 and 7,128,035.82 is: 9,837,745.21
Step by Step Solution
- Step 1: Write the proportion equation
11,257,620.84 : 15,537,184.20 = 7,128,035.82 : x - Step 2: Convert to fraction form
11,257,620.84/15,537,184.20 = 7,128,035.82/x - Step 3: Cross multiply
11,257,620.84x = 15,537,184.20 × 7,128,035.82 - Step 4: Simplify right side
11,257,620.84x = 110,749,605,519,538.05 - Step 5: Solve for x
x = 110,749,605,519,538.05/11,257,620.84 - Step 6: Final answer
x = 9,837,745.21
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.