Finding the Fourth Proportional to 28,775,673.58, 39,709,247.88 and 15,723,380.56
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Solution
The fourth proportional to 28,775,673.58, 39,709,247.88 and 15,723,380.56 is: 21,697,619.50
Step by Step Solution
- Step 1: Write the proportion equation
28,775,673.58 : 39,709,247.88 = 15,723,380.56 : x - Step 2: Convert to fraction form
28,775,673.58/39,709,247.88 = 15,723,380.56/x - Step 3: Cross multiply
28,775,673.58x = 39,709,247.88 × 15,723,380.56 - Step 4: Simplify right side
28,775,673.58x = 624,363,616,168,613.25 - Step 5: Solve for x
x = 624,363,616,168,613.25/28,775,673.58 - Step 6: Final answer
x = 21,697,619.50
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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.