Finding the Fourth Proportional to 19,986,811.99, 27,581,990.58 and 11,727,014.78
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Solution
The fourth proportional to 19,986,811.99, 27,581,990.58 and 11,727,014.78 is: 16,183,391.90
Step by Step Solution
- Step 1: Write the proportion equation
19,986,811.99 : 27,581,990.58 = 11,727,014.78 : x - Step 2: Convert to fraction form
19,986,811.99/27,581,990.58 = 11,727,014.78/x - Step 3: Cross multiply
19,986,811.99x = 27,581,990.58 × 11,727,014.78 - Step 4: Simplify right side
19,986,811.99x = 323,454,411,262,435.75 - Step 5: Solve for x
x = 323,454,411,262,435.75/19,986,811.99 - Step 6: Final answer
x = 16,183,391.90
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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.