Finding the Fourth Proportional to 20,487,564.09, 28,272,496.94 and 11,194,930.01
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Solution
The fourth proportional to 20,487,564.09, 28,272,496.94 and 11,194,930.01 is: 15,448,816.80
Step by Step Solution
- Step 1: Write the proportion equation
20,487,564.09 : 28,272,496.94 = 11,194,930.01 : x - Step 2: Convert to fraction form
20,487,564.09/28,272,496.94 = 11,194,930.01/x - Step 3: Cross multiply
20,487,564.09x = 28,272,496.94 × 11,194,930.01 - Step 4: Simplify right side
20,487,564.09x = 316,508,624,253,902.06 - Step 5: Solve for x
x = 316,508,624,253,902.06/20,487,564.09 - Step 6: Final answer
x = 15,448,816.80
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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.