Finding the Fourth Proportional to 13,207,909.28, 19,811,868.24 and 8,719,135.52
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Solution
The fourth proportional to 13,207,909.28, 19,811,868.24 and 8,719,135.52 is: 13,078,706.13
Step by Step Solution
- Step 1: Write the proportion equation
13,207,909.28 : 19,811,868.24 = 8,719,135.52 : x - Step 2: Convert to fraction form
13,207,909.28/19,811,868.24 = 8,719,135.52/x - Step 3: Cross multiply
13,207,909.28x = 19,811,868.24 × 8,719,135.52 - Step 4: Simplify right side
13,207,909.28x = 172,742,364,088,943.88 - Step 5: Solve for x
x = 172,742,364,088,943.88/13,207,909.28 - Step 6: Final answer
x = 13,078,706.13
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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.