Finding the Fourth Proportional to 21,621,512.28, 29,837,688.87 and 11,831,955.96
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Solution
The fourth proportional to 21,621,512.28, 29,837,688.87 and 11,831,955.96 is: 16,328,100.28
Step by Step Solution
- Step 1: Write the proportion equation
21,621,512.28 : 29,837,688.87 = 11,831,955.96 : x - Step 2: Convert to fraction form
21,621,512.28/29,837,688.87 = 11,831,955.96/x - Step 3: Cross multiply
21,621,512.28x = 29,837,688.87 × 11,831,955.96 - Step 4: Simplify right side
21,621,512.28x = 353,038,220,658,022.19 - Step 5: Solve for x
x = 353,038,220,658,022.19/21,621,512.28 - Step 6: Final answer
x = 16,328,100.28
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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.