Finding the Fourth Proportional to 19,642,047.21, 27,107,387.51 and 11,907,415.53
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Solution
The fourth proportional to 19,642,047.21, 27,107,387.51 and 11,907,415.53 is: 16,433,059.32
Step by Step Solution
- Step 1: Write the proportion equation
19,642,047.21 : 27,107,387.51 = 11,907,415.53 : x - Step 2: Convert to fraction form
19,642,047.21/27,107,387.51 = 11,907,415.53/x - Step 3: Cross multiply
19,642,047.21x = 27,107,387.51 × 11,907,415.53 - Step 4: Simplify right side
19,642,047.21x = 322,778,926,954,764.94 - Step 5: Solve for x
x = 322,778,926,954,764.94/19,642,047.21 - Step 6: Final answer
x = 16,433,059.32
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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.