Finding the Fourth Proportional to 28,382,105.76, 39,167,293.68 and 15,329,359.68
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Solution
The fourth proportional to 28,382,105.76, 39,167,293.68 and 15,329,359.68 is: 21,154,509.73
Step by Step Solution
- Step 1: Write the proportion equation
28,382,105.76 : 39,167,293.68 = 15,329,359.68 : x - Step 2: Convert to fraction form
28,382,105.76/39,167,293.68 = 15,329,359.68/x - Step 3: Cross multiply
28,382,105.76x = 39,167,293.68 × 15,329,359.68 - Step 4: Simplify right side
28,382,105.76x = 600,409,532,512,910.75 - Step 5: Solve for x
x = 600,409,532,512,910.75/28,382,105.76 - Step 6: Final answer
x = 21,154,509.73
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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.