Finding the Fourth Proportional to 28,474,753.73, 39,294,964.18 and 15,421,713.79
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Solution
The fourth proportional to 28,474,753.73, 39,294,964.18 and 15,421,713.79 is: 21,281,858.89
Step by Step Solution
- Step 1: Write the proportion equation
28,474,753.73 : 39,294,964.18 = 15,421,713.79 : x - Step 2: Convert to fraction form
28,474,753.73/39,294,964.18 = 15,421,713.79/x - Step 3: Cross multiply
28,474,753.73x = 39,294,964.18 × 15,421,713.79 - Step 4: Simplify right side
28,474,753.73x = 605,995,690,698,678.62 - Step 5: Solve for x
x = 605,995,690,698,678.62/28,474,753.73 - Step 6: Final answer
x = 21,281,858.89
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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.