Finding the Fourth Proportional to 28,385,921.03, 39,172,586.65 and 15,333,180.08
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Solution
The fourth proportional to 28,385,921.03, 39,172,586.65 and 15,333,180.08 is: 21,159,796.95
Step by Step Solution
- Step 1: Write the proportion equation
28,385,921.03 : 39,172,586.65 = 15,333,180.08 : x - Step 2: Convert to fraction form
28,385,921.03/39,172,586.65 = 15,333,180.08/x - Step 3: Cross multiply
28,385,921.03x = 39,172,586.65 × 15,333,180.08 - Step 4: Simplify right side
28,385,921.03x = 600,640,325,069,658 - Step 5: Solve for x
x = 600,640,325,069,658/28,385,921.03 - Step 6: Final answer
x = 21,159,796.95
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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.