Finding the Fourth Proportional to 15,304,474.98, 21,119,206.59 and 8,428,957.02
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Solution
The fourth proportional to 15,304,474.98, 21,119,206.59 and 8,428,957.02 is: 11,631,427.07
Step by Step Solution
- Step 1: Write the proportion equation
15,304,474.98 : 21,119,206.59 = 8,428,957.02 : x - Step 2: Convert to fraction form
15,304,474.98/21,119,206.59 = 8,428,957.02/x - Step 3: Cross multiply
15,304,474.98x = 21,119,206.59 × 8,428,957.02 - Step 4: Simplify right side
15,304,474.98x = 178,012,884,643,610.75 - Step 5: Solve for x
x = 178,012,884,643,610.75/15,304,474.98 - Step 6: Final answer
x = 11,631,427.07
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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.