Finding the Fourth Proportional to 15,840,140.74, 21,859,403.19 and 8,596,796.74
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Solution
The fourth proportional to 15,840,140.74, 21,859,403.19 and 8,596,796.74 is: 11,863,584.37
Step by Step Solution
- Step 1: Write the proportion equation
15,840,140.74 : 21,859,403.19 = 8,596,796.74 : x - Step 2: Convert to fraction form
15,840,140.74/21,859,403.19 = 8,596,796.74/x - Step 3: Cross multiply
15,840,140.74x = 21,859,403.19 × 8,596,796.74 - Step 4: Simplify right side
15,840,140.74x = 187,920,846,082,137.62 - Step 5: Solve for x
x = 187,920,846,082,137.62/15,840,140.74 - Step 6: Final answer
x = 11,863,584.37
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Double scale
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1.5x scale
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.