Finding the Fourth Proportional to 13,787,983.68, 20,683,391.40 and 5,275,479.84
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Solution
The fourth proportional to 13,787,983.68, 20,683,391.40 and 5,275,479.84 is: 7,913,761.50
Step by Step Solution
- Step 1: Write the proportion equation
13,787,983.68 : 20,683,391.40 = 5,275,479.84 : x - Step 2: Convert to fraction form
13,787,983.68/20,683,391.40 = 5,275,479.84/x - Step 3: Cross multiply
13,787,983.68x = 20,683,391.40 × 5,275,479.84 - Step 4: Simplify right side
13,787,983.68x = 109,114,814,353,529.36 - Step 5: Solve for x
x = 109,114,814,353,529.36/13,787,983.68 - Step 6: Final answer
x = 7,913,761.50
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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.