Finding the Fourth Proportional to 15,493,243.68, 21,386,432.07 and 13,309,021.17
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Solution
The fourth proportional to 15,493,243.68, 21,386,432.07 and 13,309,021.17 is: 18,371,393.56
Step by Step Solution
- Step 1: Write the proportion equation
15,493,243.68 : 21,386,432.07 = 13,309,021.17 : x - Step 2: Convert to fraction form
15,493,243.68/21,386,432.07 = 13,309,021.17/x - Step 3: Cross multiply
15,493,243.68x = 21,386,432.07 × 13,309,021.17 - Step 4: Simplify right side
15,493,243.68x = 284,632,477,170,396.94 - Step 5: Solve for x
x = 284,632,477,170,396.94/15,493,243.68 - Step 6: Final answer
x = 18,371,393.56
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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.