Finding the Fourth Proportional to 15,036,021.92, 20,749,718.79 and 8,160,503.99
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Solution
The fourth proportional to 15,036,021.92, 20,749,718.79 and 8,160,503.99 is: 11,261,500.13
Step by Step Solution
- Step 1: Write the proportion equation
15,036,021.92 : 20,749,718.79 = 8,160,503.99 : x - Step 2: Convert to fraction form
15,036,021.92/20,749,718.79 = 8,160,503.99/x - Step 3: Cross multiply
15,036,021.92x = 20,749,718.79 × 8,160,503.99 - Step 4: Simplify right side
15,036,021.92x = 169,328,162,873,424.38 - Step 5: Solve for x
x = 169,328,162,873,424.38/15,036,021.92 - Step 6: Final answer
x = 11,261,500.13
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1.5x scale
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.