Finding the Fourth Proportional to 11,615,492.81, 16,029,771.57 and 6,388,905.21
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Solution
The fourth proportional to 11,615,492.81, 16,029,771.57 and 6,388,905.21 is: 8,816,904.53
Step by Step Solution
- Step 1: Write the proportion equation
11,615,492.81 : 16,029,771.57 = 6,388,905.21 : x - Step 2: Convert to fraction form
11,615,492.81/16,029,771.57 = 6,388,905.21/x - Step 3: Cross multiply
11,615,492.81x = 16,029,771.57 × 6,388,905.21 - Step 4: Simplify right side
11,615,492.81x = 102,412,691,098,682.88 - Step 5: Solve for x
x = 102,412,691,098,682.88/11,615,492.81 - Step 6: Final answer
x = 8,816,904.53
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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.