Finding the Fourth Proportional to 18,428,900.40, 27,664,345.80 and 10,860,130.80
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Solution
The fourth proportional to 18,428,900.40, 27,664,345.80 and 10,860,130.80 is: 16,302,568.65
Step by Step Solution
- Step 1: Write the proportion equation
18,428,900.40 : 27,664,345.80 = 10,860,130.80 : x - Step 2: Convert to fraction form
18,428,900.40/27,664,345.80 = 10,860,130.80/x - Step 3: Cross multiply
18,428,900.40x = 27,664,345.80 × 10,860,130.80 - Step 4: Simplify right side
18,428,900.40x = 300,438,413,884,430.69 - Step 5: Solve for x
x = 300,438,413,884,430.69/18,428,900.40 - Step 6: Final answer
x = 16,302,568.65
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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.