Finding the Fourth Proportional to 13,268,717.34, 18,316,479.69 and 8,920,325.67
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Solution
The fourth proportional to 13,268,717.34, 18,316,479.69 and 8,920,325.67 is: 12,313,847.66
Step by Step Solution
- Step 1: Write the proportion equation
13,268,717.34 : 18,316,479.69 = 8,920,325.67 : x - Step 2: Convert to fraction form
13,268,717.34/18,316,479.69 = 8,920,325.67/x - Step 3: Cross multiply
13,268,717.34x = 18,316,479.69 × 8,920,325.67 - Step 4: Simplify right side
13,268,717.34x = 163,388,963,962,740.66 - Step 5: Solve for x
x = 163,388,963,962,740.66/13,268,717.34 - Step 6: Final answer
x = 12,313,847.66
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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.