Finding the Fourth Proportional to 18,683,459.92, 28,036,257.71 and 7,900,169.68
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Solution
The fourth proportional to 18,683,459.92, 28,036,257.71 and 7,900,169.68 is: 11,854,934.47
Step by Step Solution
- Step 1: Write the proportion equation
18,683,459.92 : 28,036,257.71 = 7,900,169.68 : x - Step 2: Convert to fraction form
18,683,459.92/28,036,257.71 = 7,900,169.68/x - Step 3: Cross multiply
18,683,459.92x = 28,036,257.71 × 7,900,169.68 - Step 4: Simplify right side
18,683,459.92x = 221,491,193,101,208.22 - Step 5: Solve for x
x = 221,491,193,101,208.22/18,683,459.92 - Step 6: Final answer
x = 11,854,934.47
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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.