Finding the Fourth Proportional to 20,832,221.18, 31,121,627.20 and 13,485,832.97
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Solution
The fourth proportional to 20,832,221.18, 31,121,627.20 and 13,485,832.97 is: 20,146,726.66
Step by Step Solution
- Step 1: Write the proportion equation
20,832,221.18 : 31,121,627.20 = 13,485,832.97 : x - Step 2: Convert to fraction form
20,832,221.18/31,121,627.20 = 13,485,832.97/x - Step 3: Cross multiply
20,832,221.18x = 31,121,627.20 × 13,485,832.97 - Step 4: Simplify right side
20,832,221.18x = 419,701,065,984,486.06 - Step 5: Solve for x
x = 419,701,065,984,486.06/20,832,221.18 - Step 6: Final answer
x = 20,146,726.66
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.