Finding the Fourth Proportional to 13,081,719.12, 18,052,772.43 and 7,281,870.99
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Solution
The fourth proportional to 13,081,719.12, 18,052,772.43 and 7,281,870.99 is: 10,048,981.99
Step by Step Solution
- Step 1: Write the proportion equation
13,081,719.12 : 18,052,772.43 = 7,281,870.99 : x - Step 2: Convert to fraction form
13,081,719.12/18,052,772.43 = 7,281,870.99/x - Step 3: Cross multiply
13,081,719.12x = 18,052,772.43 × 7,281,870.99 - Step 4: Simplify right side
13,081,719.12x = 131,457,959,847,088.81 - Step 5: Solve for x
x = 131,457,959,847,088.81/13,081,719.12 - Step 6: Final answer
x = 10,048,981.99
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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.