Finding the Fourth Proportional to 21,621,064.97, 29,837,066.79 and 11,831,510.31
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Solution
The fourth proportional to 21,621,064.97, 29,837,066.79 and 11,831,510.31 is: 16,327,482.66
Step by Step Solution
- Step 1: Write the proportion equation
21,621,064.97 : 29,837,066.79 = 11,831,510.31 : x - Step 2: Convert to fraction form
21,621,064.97/29,837,066.79 = 11,831,510.31/x - Step 3: Cross multiply
21,621,064.97x = 29,837,066.79 × 11,831,510.31 - Step 4: Simplify right side
21,621,064.97x = 353,017,563,346,043.62 - Step 5: Solve for x
x = 353,017,563,346,043.62/21,621,064.97 - Step 6: Final answer
x = 16,327,482.66
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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.