Finding the Fourth Proportional to 28,385,692.65, 39,172,271.49 and 15,332,951.70
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Solution
The fourth proportional to 28,385,692.65, 39,172,271.49 and 15,332,951.70 is: 21,159,481.79
Step by Step Solution
- Step 1: Write the proportion equation
28,385,692.65 : 39,172,271.49 = 15,332,951.70 : x - Step 2: Convert to fraction form
28,385,692.65/39,172,271.49 = 15,332,951.70/x - Step 3: Cross multiply
28,385,692.65x = 39,172,271.49 × 15,332,951.70 - Step 4: Simplify right side
28,385,692.65x = 600,626,546,735,457 - Step 5: Solve for x
x = 600,626,546,735,457/28,385,692.65 - Step 6: Final answer
x = 21,159,481.79
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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.