Finding the Fourth Proportional to 13,669,644.14, 18,863,901.78 and 7,474,710.68
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Solution
The fourth proportional to 13,669,644.14, 18,863,901.78 and 7,474,710.68 is: 10,314,987.48
Step by Step Solution
- Step 1: Write the proportion equation
13,669,644.14 : 18,863,901.78 = 7,474,710.68 : x - Step 2: Convert to fraction form
13,669,644.14/18,863,901.78 = 7,474,710.68/x - Step 3: Cross multiply
13,669,644.14x = 18,863,901.78 × 7,474,710.68 - Step 4: Simplify right side
13,669,644.14x = 141,002,208,101,437 - Step 5: Solve for x
x = 141,002,208,101,437/13,669,644.14 - Step 6: Final answer
x = 10,314,987.48
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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.