Finding the Fourth Proportional to 28,440,910.49, 39,248,455.84 and 15,388,169.40
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Solution
The fourth proportional to 28,440,910.49, 39,248,455.84 and 15,388,169.40 is: 21,235,673.43
Step by Step Solution
- Step 1: Write the proportion equation
28,440,910.49 : 39,248,455.84 = 15,388,169.40 : x - Step 2: Convert to fraction form
28,440,910.49/39,248,455.84 = 15,388,169.40/x - Step 3: Cross multiply
28,440,910.49x = 39,248,455.84 × 15,388,169.40 - Step 4: Simplify right side
28,440,910.49x = 603,961,887,115,868.88 - Step 5: Solve for x
x = 603,961,887,115,868.88/28,440,910.49 - Step 6: Final answer
x = 21,235,673.43
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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.