Finding the Fourth Proportional to 28,761,138.48, 39,689,756.49 and 15,708,450
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Solution
The fourth proportional to 28,761,138.48, 39,689,756.49 and 15,708,450 is: 21,677,325.32
Step by Step Solution
- Step 1: Write the proportion equation
28,761,138.48 : 39,689,756.49 = 15,708,450 : x - Step 2: Convert to fraction form
28,761,138.48/39,689,756.49 = 15,708,450/x - Step 3: Cross multiply
28,761,138.48x = 39,689,756.49 × 15,708,450 - Step 4: Simplify right side
28,761,138.48x = 623,464,555,335,340.50 - Step 5: Solve for x
x = 623,464,555,335,340.50/28,761,138.48 - Step 6: Final answer
x = 21,677,325.32
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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.