Finding the Fourth Proportional to 11,506,770.54, 15,885,313.60 and 8,405,811.90
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Solution
The fourth proportional to 11,506,770.54, 15,885,313.60 and 8,405,811.90 is: 11,604,381.75
Step by Step Solution
- Step 1: Write the proportion equation
11,506,770.54 : 15,885,313.60 = 8,405,811.90 : x - Step 2: Convert to fraction form
11,506,770.54/15,885,313.60 = 8,405,811.90/x - Step 3: Cross multiply
11,506,770.54x = 15,885,313.60 × 8,405,811.90 - Step 4: Simplify right side
11,506,770.54x = 133,528,958,094,111.84 - Step 5: Solve for x
x = 133,528,958,094,111.84/11,506,770.54 - Step 6: Final answer
x = 11,604,381.75
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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.