Finding the Fourth Proportional to 20,562,351.17, 28,388,946.76 and 13,232,921.99
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Solution
The fourth proportional to 20,562,351.17, 28,388,946.76 and 13,232,921.99 is: 18,269,735.53
Step by Step Solution
- Step 1: Write the proportion equation
20,562,351.17 : 28,388,946.76 = 13,232,921.99 : x - Step 2: Convert to fraction form
20,562,351.17/28,388,946.76 = 13,232,921.99/x - Step 3: Cross multiply
20,562,351.17x = 28,388,946.76 × 13,232,921.99 - Step 4: Simplify right side
20,562,351.17x = 375,668,717,678,316.19 - Step 5: Solve for x
x = 375,668,717,678,316.19/20,562,351.17 - Step 6: Final answer
x = 18,269,735.53
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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.