Finding the Fourth Proportional to 15,255,262.05, 21,052,416.11 and 8,286,075.66
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Solution
The fourth proportional to 15,255,262.05, 21,052,416.11 and 8,286,075.66 is: 11,434,868.32
Step by Step Solution
- Step 1: Write the proportion equation
15,255,262.05 : 21,052,416.11 = 8,286,075.66 : x - Step 2: Convert to fraction form
15,255,262.05/21,052,416.11 = 8,286,075.66/x - Step 3: Cross multiply
15,255,262.05x = 21,052,416.11 × 8,286,075.66 - Step 4: Simplify right side
15,255,262.05x = 174,441,912,713,262.88 - Step 5: Solve for x
x = 174,441,912,713,262.88/15,255,262.05 - Step 6: Final answer
x = 11,434,868.32
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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.