Finding the Fourth Proportional to 12,131,476.32, 16,743,599.74 and 7,169,715.07
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Solution
The fourth proportional to 12,131,476.32, 16,743,599.74 and 7,169,715.07 is: 9,895,484.78
Step by Step Solution
- Step 1: Write the proportion equation
12,131,476.32 : 16,743,599.74 = 7,169,715.07 : x - Step 2: Convert to fraction form
12,131,476.32/16,743,599.74 = 7,169,715.07/x - Step 3: Cross multiply
12,131,476.32x = 16,743,599.74 × 7,169,715.07 - Step 4: Simplify right side
12,131,476.32x = 120,046,839,349,029.23 - Step 5: Solve for x
x = 120,046,839,349,029.23/12,131,476.32 - Step 6: Final answer
x = 9,895,484.78
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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.