Finding the Fourth Proportional to 13,081,718.12, 18,052,771.05 and 7,281,869.99
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Solution
The fourth proportional to 13,081,718.12, 18,052,771.05 and 7,281,869.99 is: 10,048,980.61
Step by Step Solution
- Step 1: Write the proportion equation
13,081,718.12 : 18,052,771.05 = 7,281,869.99 : x - Step 2: Convert to fraction form
13,081,718.12/18,052,771.05 = 7,281,869.99/x - Step 3: Cross multiply
13,081,718.12x = 18,052,771.05 × 7,281,869.99 - Step 4: Simplify right side
13,081,718.12x = 131,457,931,655,071.95 - Step 5: Solve for x
x = 131,457,931,655,071.95/13,081,718.12 - Step 6: Final answer
x = 10,048,980.61
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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.