Finding the Fourth Proportional to 12,128,073.40, 18,192,110.10 and 11,888,924.95
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Solution
The fourth proportional to 12,128,073.40, 18,192,110.10 and 11,888,924.95 is: 17,833,387.43
Step by Step Solution
- Step 1: Write the proportion equation
12,128,073.40 : 18,192,110.10 = 11,888,924.95 : x - Step 2: Convert to fraction form
12,128,073.40/18,192,110.10 = 11,888,924.95/x - Step 3: Cross multiply
12,128,073.40x = 18,192,110.10 × 11,888,924.95 - Step 4: Simplify right side
12,128,073.40x = 216,284,631,661,037 - Step 5: Solve for x
x = 216,284,631,661,037/12,128,073.40 - Step 6: Final answer
x = 17,833,387.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.