Finding the Fourth Proportional to 18,969,931.12, 28,459,423.50 and 6,190,459.60
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Solution
The fourth proportional to 18,969,931.12, 28,459,423.50 and 6,190,459.60 is: 9,287,166.64
Step by Step Solution
- Step 1: Write the proportion equation
18,969,931.12 : 28,459,423.50 = 6,190,459.60 : x - Step 2: Convert to fraction form
18,969,931.12/28,459,423.50 = 6,190,459.60/x - Step 3: Cross multiply
18,969,931.12x = 28,459,423.50 × 6,190,459.60 - Step 4: Simplify right side
18,969,931.12x = 176,176,911,416,040.59 - Step 5: Solve for x
x = 176,176,911,416,040.59/18,969,931.12 - Step 6: Final answer
x = 9,287,166.64
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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.