Finding the Fourth Proportional to 20,419,485.68, 28,179,079.20 and 11,252,456.48
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Solution
The fourth proportional to 20,419,485.68, 28,179,079.20 and 11,252,456.48 is: 15,528,494.07
Step by Step Solution
- Step 1: Write the proportion equation
20,419,485.68 : 28,179,079.20 = 11,252,456.48 : x - Step 2: Convert to fraction form
20,419,485.68/28,179,079.20 = 11,252,456.48/x - Step 3: Cross multiply
20,419,485.68x = 28,179,079.20 × 11,252,456.48 - Step 4: Simplify right side
20,419,485.68x = 317,083,862,344,473.25 - Step 5: Solve for x
x = 317,083,862,344,473.25/20,419,485.68 - Step 6: Final answer
x = 15,528,494.07
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.