Finding the Fourth Proportional to 11,220,756.93, 15,477,464.21 and 7,781,743.17
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Solution
The fourth proportional to 11,220,756.93, 15,477,464.21 and 7,781,743.17 is: 10,733,825.90
Step by Step Solution
- Step 1: Write the proportion equation
11,220,756.93 : 15,477,464.21 = 7,781,743.17 : x - Step 2: Convert to fraction form
11,220,756.93/15,477,464.21 = 7,781,743.17/x - Step 3: Cross multiply
11,220,756.93x = 15,477,464.21 × 7,781,743.17 - Step 4: Simplify right side
11,220,756.93x = 120,441,651,366,178.23 - Step 5: Solve for x
x = 120,441,651,366,178.23/11,220,756.93 - Step 6: Final answer
x = 10,733,825.90
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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.